I have a case of vitiligo in my dermatology practical exam prepare me for the questions that examiner might ask by making extensive questions and answers about vitiligo surgery taking information in this pdf as primary source and also make questions regarding recent advances if there are any other than those mentioned in this pdf

Reading File

Browsing Directory

~/attachments/60bf7425-1088-417e-abe2-e8d39509e66f/

Finding Sources

Searching PubMed

vitiligo AND surgery

Searching the Web

2024 2025 vitiligo surgical treatment recent advances melanocyte keratinocyte transplantation review

Reading File

Finding Sources

Searching PubMed

vitiligo AND transplantation

Reading Web Page

https://www.dovepress.com/emerging-surgical-therapies-for-vi…

Running Command

python -c "from pypdf import PdfReader; p='/tmp/workspace/attachments/60bf7425-1088-417e-abe2-e8d39509e66f/ACSI vitiligo surgery.pdf'; r=PdfReader(p); print('PAGES',len(r.pages)); [print('\\n---PAGE',i+1,'---\\n'+(page.extract_text() or '')[:12000]) for i,page in enumerate(r.pages)]"

Reading File

Reading Article

PMID: 39891763

Reading Article

PMID: 39182674

Reading Article

PMID: 33595599

Vitiligo surgery viva: examiner-style questions and answers

This is based primarily on your uploaded PDF, ACSI Vitiligo Surgery, with recent advances added at the end. For a practical exam, first establish that the patient has stable vitiligo before discussing any procedure.

A 30-second opening answer

“Vitiligo surgery is an autologous melanocyte transplantation procedure used for cosmetically distressing, stable, treatment-resistant vitiligo. It works by transferring melanocytes, either as tissue grafts or cell suspensions, into depigmented skin. The most important determinant of success is correct selection of a clinically stable patient, usually with no new or enlarging lesions and no Koebner phenomenon for at least one year. Segmental vitiligo is generally the best indication. The choice of technique depends on site, size, hair-bearing status, patient expectations, donor-skin availability, cost, and surgical expertise.”

ACSI Vitiligo Surgery, pp. 327-331.

1. Basic concepts

1. What is vitiligo surgery?

Vitiligo surgery refers to autologous transplantation techniques that introduce functional melanocytes into depigmented skin to obtain cosmetically acceptable repigmentation. It does not cure the underlying autoimmune tendency or guarantee that the disease will never reactivate.

ACSI Vitiligo Surgery, p. 328.

2. What is the basic principle of surgery in vitiligo?

The principle is to transfer viable melanocytes from normally pigmented autologous donor skin to a prepared depigmented recipient site. These melanocytes survive, proliferate, migrate, produce melanin, and establish functional epidermal melanin units if the disease is stable.

ACSI Vitiligo Surgery, p. 328.

3. Why is surgery not done in active vitiligo?

Trauma from donor harvesting and recipient-site preparation can provoke Koebnerization. In active disease, the autoimmune process may destroy the transplanted melanocytes, cause graft depigmentation, lead to recurrence, or produce new lesions at donor and recipient sites.

4. Is vitiligo surgery curative?

No. It is primarily a method of cosmetic repigmentation. It replaces melanocytes in selected lesions but does not necessarily suppress systemic or local autoimmune activity. The patient must be counselled about recurrence and possible need for medical maintenance therapy.

ACSI Vitiligo Surgery, p. 331.

5. Which patients are most suitable?

The best candidates are patients with:

Stable segmental vitiligo
Stable focal or localized non-segmental vitiligo
Stable residual lesions after medical treatment
Stable lesions at cosmetically important sites, especially face
Treatment-resistant lesions with significant psychosocial impact

6. Which type of vitiligo gives the best surgical results?

Stable segmental vitiligo usually gives the most predictable result because it often becomes stable earlier and is less likely to reactivate than generalized non-segmental vitiligo.

Fitzpatrick's Dermatology, surgical therapies section.

7. What are the indications for vitiligo surgery?

Indications include:

Stable vitiligo for at least 1 year.
No new lesions or enlargement of old lesions.
No Koebner phenomenon.
Failure of or poor response to appropriate medical therapy and phototherapy.
Localized, segmental, focal, or stable residual disease.
A motivated patient with realistic expectations.
A site likely to respond satisfactorily.

ACSI Vitiligo Surgery, pp. 329-331.

8. What are the contraindications?

Important contraindications include:

Active or unstable vitiligo
Recent spread or new lesions
Positive Koebner phenomenon
Keloidal tendency or significant hypertrophic scarring
Unrealistic cosmetic expectations
Poor compliance with immobilization or follow-up
Active local infection
Bleeding tendency or uncontrolled systemic disease
Very young children when cooperation, disease stability, or anaesthetic issues are concerns

9. Does every stable patient require a test graft?

No. A test graft is useful when the history of stability is uncertain, lesions are clinically doubtful, or the examiner wants objective support for proceeding. It is helpful but not infallible.

10. What is the practical goal of surgery?

The goal is good cosmetic repigmentation with acceptable colour and texture match, rather than histological perfection or permanent eradication of vitiligo.

2. Stability in vitiligo

11. Define stable vitiligo.

Stable vitiligo means absence of:

New lesions
Enlargement of existing lesions
Koebner phenomenon

for a defined period. The IADVL recommendation quoted in your PDF is one year of such stability.

ACSI Vitiligo Surgery, pp. 329-330.

12. Why is stability the most important selection criterion?

Because viable transplanted melanocytes can survive only when depigmenting activity is inactive or adequately controlled. In unstable disease, the graft can depigment despite technically successful surgery.

13. What history will you take to determine stability?

Ask specifically about:

Any new white patches in the past year
Increase in size of established lesions
Depigmentation after cuts, burns, scratching, shaving, pressure, or surgery
Spontaneous perifollicular repigmentation
Previous response and relapse after treatment
Family history and associated autoimmune illness
Herpes labialis or genital herpes when surgery is contemplated on lips or genitalia

14. What clinical signs suggest stability?

Favourable signs include:

Sharply demarcated lesion margins
Perilesional hyperpigmentation
Spontaneous repigmentation, particularly perifollicular pigmentation
Absence of Koebner phenomenon
No recent new or expanding lesions

ACSI Vitiligo Surgery, pp. 329-331.

15. What is the VIDA score?

VIDA means Vitiligo Disease Activity score.

VIDA score	Disease activity
+4	Active within 6 weeks
+3	Active within 3 months
+2	Active within 6 months
+1	Active within 1 year
0	Stable for at least 1 year
-1	Stable for at least 1 year with spontaneous repigmentation

For surgery, a VIDA of 0 or -1 is desirable.

ACSI Vitiligo Surgery, p. 330.

16. What is Koebner phenomenon in vitiligo?

It is the appearance of vitiligo lesions at sites of trauma, such as scratches, burns, surgical scars, or frictional sites. It suggests disease activity and predicts a less favourable outcome from surgery.

17. What is test grafting?

Test grafting, or minigraft test, involves placing 6 to 8 small autologous punch grafts in a vitiligo lesion and observing it for approximately 12 weeks.

18. When is a test graft considered positive?

It is positive when there is unequivocal pigment spread more than 1 mm beyond the margin of the graft after about 12 weeks.

ACSI Vitiligo Surgery, pp. 329-330.

19. What does a positive test graft indicate?

It supports clinical stability and suggests that the lesion may respond to transplantation.

20. What are the limitations of test grafting?

A positive test does not guarantee lasting success because subclinical autoimmune activity may still be present. Conversely, some test-graft-negative patients can show favourable results after definitive transplantation. Therefore, the test must be interpreted with history, examination, and disease activity assessment.

ACSI Vitiligo Surgery, p. 330.

21. Is stability lesion-specific or patient-specific?

It can be lesion-specific. One area may be stable while another area in the same patient may remain active. Therefore, examine the proposed donor site and recipient lesion separately.

ACSI Vitiligo Surgery, p. 329.

3. Classification of vitiligo surgical methods

22. Classify vitiligo surgery.

Vitiligo surgery is divided into:

A. Tissue grafts

Mini-punch grafting
Suction blister epidermal grafting
Thin or ultrathin split-thickness skin grafting
Hair follicle grafting
Smash grafting, mesh grafting, flip-top grafting

B. Cellular grafts

Non-cultured epidermal cell suspension
Non-cultured melanocyte-keratinocyte cell suspension
Cultured melanocyte transplantation
Cultured melanocyte-keratinocyte grafts
Hair follicular outer-root-sheath cell suspension

C. Other measures

Micropigmentation or tattooing
Excision and primary closure for a very small lesion
Therapeutic wounding methods in selected hairy areas

ACSI Vitiligo Surgery, pp. 328 and 383-384.

23. What is the difference between tissue and cellular grafting?

In tissue grafting, a piece of donor epidermis or skin containing melanocytes is transferred to the recipient site. The donor-to-recipient ratio is usually close to 1:1.

In cellular grafting, donor skin is processed to make a melanocyte-rich cell suspension. It can cover a much larger recipient area from a small donor sample, often around 1:8 to 1:10 for non-cultured suspension.

ACSI Vitiligo Surgery, pp. 359-365.

24. Which techniques are simplest?

Mini-punch grafting is generally the easiest and least expensive surgical technique. It is useful for small, irregular, resistant lesions but has the greatest risk of cobblestoning and a poor cosmetic finish in unsuitable sites.

25. Which technique gives the best cosmetic result for small facial lesions?

Suction blister epidermal grafting is an excellent option for small facial lesions, especially lips and eyelids, because it is purely epidermal and leaves minimal or no donor-site scar.

ACSI Vitiligo Surgery, pp. 343-350.

26. Which technique is useful for large areas?

Thin split-thickness skin grafting and non-cultured epidermal cell suspension can cover relatively large areas. Cultured melanocyte techniques can theoretically cover very extensive disease, but require a cell-culture laboratory and specialist expertise.

27. Which technique has the highest complication rate?

Mini-punch grafting has the highest complication rate, particularly cobblestoning, polka-dot appearance, colour mismatch, static grafts, and donor-site scarring.

ACSI Vitiligo Surgery, pp. 375-381.

28. Which technique has the least donor-site morbidity?

Suction blister epidermal grafting has very low donor-site morbidity because only the epidermal blister roof is harvested and the dermis remains intact. Cellular grafts also generally have low donor-site morbidity because only a small donor area is required.

4. Mini-punch grafting

29. What is mini-punch grafting?

It is an autologous tissue-grafting method in which very small punch grafts from normally pigmented skin are implanted into corresponding recipient chambers created within stable vitiligo lesions.

30. What are its main indications?

It is particularly useful for:

Small, stable, irregular lesions
Acral lesions
Periungual lesions
Areola and nipple
Small resistant patches
Settings with limited equipment or resources

31. What punch size is preferred?

Modern practice favours small punches, generally 1 to 1.5 mm. For face and lips, 1 mm or 1.2 mm is preferred. Larger punches increase cobblestoning.

ACSI Vitiligo Surgery, pp. 334, 338-341.

32. What is the donor site for mini-punch grafting?

The upper lateral thigh or gluteal region is commonly used because the area is relatively concealed and donor-site scarring is less conspicuous.

33. How are grafts spaced?

The spacing is based on test-graft pigment spread. In practice, recipient chambers are commonly placed about 5 to 10 mm apart.

ACSI Vitiligo Surgery, p. 336.

34. Why should donor and recipient punches be the same size?

To ensure proper fitting and graft stability. An excessively large graft can protrude and produce cobblestoning, while an undersized graft can sink and form pits.

35. What is the mechanism of pigmentation after mini-punch grafting?

Melanocytes migrate centrifugally from the graft into surrounding depigmented epidermis, proliferate, and establish functional epidermal melanin units. The pigment spread may be enhanced by phototherapy.

ACSI Vitiligo Surgery, pp. 340-341.

36. When does repigmentation begin after mini-punch grafting?

Perigraft pigmentation may begin after approximately 3 to 4 weeks. Complete repigmentation can take 3 to 6 months, depending on lesion size, site, graft spacing, and use of phototherapy.

37. What are the advantages of mini-punch grafting?

Simple
Inexpensive
Office-based
Easy to learn
Useful in small irregular lesions
Suitable for acral areas and areola
Does not require a laboratory

38. What are the disadvantages?

Cobblestoning
Polka-dot or variegated appearance
Colour mismatch
Static grafts without pigment spread
Donor-site scar
Multiple grafts and prolonged procedure for a large lesion
Postoperative phototherapy is often needed

39. What is cobblestoning?

Cobblestoning is a raised, uneven recipient-site appearance caused by protruding punch grafts. It is most often due to large grafts, superficial recipient chambers, thick grafts, or improper graft fitting.

40. How can cobblestoning be prevented?

Use small punches: 1 mm on face and around 1.2 mm at other sites
Avoid punches larger than 1.5 mm
Make recipient chambers adequately deep
Trim excess fat or thickness from grafts
Ensure correct fitting and immobilization

ACSI Vitiligo Surgery, pp. 377-378.

41. What is a static graft?

A graft that survives but shows no perifocal pigment spread. It may result from residual disease activity, insufficient melanocyte migration, poor recipient-site conditions, or lack of adjuvant phototherapy.

42. How can a static graft be managed?

Reassess disease activity, consider NB-UVB or targeted phototherapy, and consider repeat grafting only after ensuring stability.

5. Suction blister epidermal grafting

43. What is suction blister epidermal grafting?

It is a tissue-grafting technique in which negative pressure creates a dermoepidermal blister at a donor site. The epidermal blister roof is harvested and transferred onto a superficially prepared stable vitiligo lesion.

44. Why is suction blister grafting cosmetically good?

The graft is essentially pure epidermis, so it produces good texture and colour match with minimal donor-site scarring and no cobblestoning.

45. What are its best indications?

Small, stable facial lesions
Eyelid vitiligo
Lip vitiligo
Localized stable patches where excellent cosmesis is required

ACSI Vitiligo Surgery, pp. 343-344.

46. What are common donor sites?

Medial forearm, upper arm, upper thigh, and other concealed normally pigmented sites with suitable skin quality.

47. How is the blister formed?

Negative pressure, often around 250 to 400 mm Hg with a suction device, separates epidermis from dermis at the dermoepidermal junction. Formation usually takes about 90 to 120 minutes, although the PDF notes a range of 1 to 3 hours.

ACSI Vitiligo Surgery, pp. 345-346.

48. How is the recipient site prepared?

The lesion can be superficially ablated by manual or motor dermabrasion, radiofrequency, Er:YAG laser, CO2 laser, suction blistering, cryoblistering, or chemical methods. The aim is to create a suitable vascular recipient bed without excessive dermal trauma.

49. What are the key technical points?

Harvest the blister roof gently.
Place the dermal surface down on the recipient site.
Avoid folding or drying.
Remove air, serum, or blood below the graft.
Apply a pressure dressing.
Immobilize mobile areas.

50. When is pigmentation expected?

Melanocyte transfer occurs within 48 to 72 hours. Clinically visible repigmentation typically develops over 2 to 3 months.

ACSI Vitiligo Surgery, pp. 347-349.

51. What are the advantages?

Excellent cosmetic result
No donor-site scar
Minimal textural change
Ideal for lips, eyelids, and face
Simple and relatively inexpensive

52. What are the limitations?

Time-consuming
Only small areas can be treated in one session
Blister formation may fail
Handling the thin graft is technically delicate
Not suitable for extensive disease or usually for palms and soles

53. What are its complications?

Graft loss or rejection
Infection
Hematoma or seroma
Wrong orientation of graft
Temporary donor-site pigmentation changes
Blister rupture, especially with excessive suction
Koebnerization in unstable disease

6. Thin split-thickness skin grafting

54. Define split-thickness skin grafting.

Split-thickness skin grafting transfers epidermis with a variable thin portion of superficial dermis from donor skin to an abraded vitiligo recipient site.

55. What are its major indications?

Large, stable, treatment-resistant lesions
Localized or segmental lesions requiring rapid uniform coverage
Areas where mini-punch grafting would give poor cosmetic results
Difficult sites when performed by experienced hands

56. What is the ideal thickness of the graft?

A very thin, translucent graft is preferred. The PDF describes a graft thickness range of 0.1 to 0.7 mm, with ultrathin grafts giving better cosmetic outcomes and less donor-site morbidity.

ACSI Vitiligo Surgery, pp. 351-353.

57. What donor sites are used?

The gluteal area is preferred for cosmetic concealment. The anterolateral thigh, arm, and abdomen may also be used.

58. How do you know the graft is of suitable depth?

Pinpoint bleeding at the donor site indicates an appropriate superficial depth. A thick graft increases risks of hypertrophy, poor match, and donor-site scarring.

59. What is the biological sequence of graft take?

Fibrin adhesion and plasmatic imbibition during the first 48 to 72 hours.
Inosculation and revascularization around day 2 to 3.
Stable vascular integration with later pigment maturation.

60. Why is immobilization important after split-thickness grafting?

Movement can shear the graft, allow hematoma or seroma formation, prevent revascularization, cause wrinkling or beading, and lead to partial or complete graft loss.

61. How do you prevent perigraft halo or achromic fissures?

Dermabrade 2 to 3 mm of surrounding normal skin.
Make the graft extend 3 to 5 mm beyond the recipient lesion.
Avoid graft contraction and maintain good immobilization.
Use postoperative NB-UVB or targeted phototherapy when appropriate.

ACSI Vitiligo Surgery, pp. 353-355.

62. What are the advantages?

Covers relatively large areas quickly
Rapid visible coverage
Uniform pigmentation
Good colour match when graft is thin
Less cobblestoning than punch grafting
Does not require cell-culture facilities

63. What are the disadvantages?

Surgical skill required
Donor-site pigmentary change or scarring
Hyperpigmentation, especially in darker skin
Perigraft halo, graft hypertrophy, milia, stuck-on appearance
Difficult on tips, palms, soles, and mucosal sites
Graft failure due to fluid collection or movement

64. What are the common causes of graft failure?

Hematoma, seroma, or trapped air below the graft
Infection
Inadequate recipient-site preparation
Poor vascularity
Excessive movement
Incorrect graft orientation
Trauma during dressing removal
Active disease or recurrence

ACSI Vitiligo Surgery, pp. 354-355.

7. Non-cultured epidermal cell suspension

65. What is non-cultured epidermal cell suspension?

It is a cellular transplantation technique in which an ultrathin autologous donor skin sample is enzymatically processed to separate epidermal cells, including melanocytes and keratinocytes. The resulting suspension is applied to a prepared vitiligo recipient site.

66. What is another name for this technique?

It is often called:

Non-cultured epidermal cell suspension, or NCES
Non-cultured melanocyte-keratinocyte transplantation procedure, or MKTP
Melanocyte-keratinocyte cell suspension transplantation

67. What is the donor-to-recipient ratio?

The PDF describes approximately 1:8 to 1:10 for larger confluent lesions. In multiple scattered lesions, a higher donor proportion may be needed.

ACSI Vitiligo Surgery, pp. 359-365.

68. What are the major steps?

A viva-safe outline is:

Harvest a very thin donor skin graft.
Enzymatically separate epidermis from dermis with trypsin-EDTA.
Neutralize trypsin with inhibitor.
Mechanically disaggregate the epidermis.
Centrifuge to obtain a cell pellet.
Resuspend the pellet in a suitable medium.
Prepare the recipient site by controlled superficial dermabrasion or laser ablation.
Spread suspension evenly and secure it with a dressing.
Immobilize and follow with phototherapy if indicated.

ACSI Vitiligo Surgery, pp. 359-363.

69. Why are keratinocytes included with melanocytes?

Keratinocytes provide a more physiologic cellular environment. They can support melanocyte survival, proliferation, migration, and melanogenesis through cell-cell interactions and growth-factor signalling.

70. What are the advantages of NCES?

Small donor area can cover a larger recipient area
Uniform repigmentation and texture match
No cobblestoning or stuck-on appearance
Can treat relatively large lesions in one session
Useful at several sites, including genital lesions in experienced centres
Lower donor-site morbidity than tissue grafts

71. What are the disadvantages?

Technically more demanding
Requires trained staff, sterile handling, enzymes, and centrifugation
Variable outcomes depending on cell viability and preparation
Higher cost than mini-punch grafting
Pigmentation takes weeks to appear
Needs careful postoperative immobilization

72. When does pigmentation develop after NCES?

Visible pigmentation generally starts in 3 to 6 weeks and becomes substantial over 3 to 6 months.

ACSI Vitiligo Surgery, p. 361.

73. What are possible modifications?

Addition of hyaluronic acid to make suspension more viscous and prevent runoff
Cold trypsinization
Use of suction blister roofs as donor tissue
Cryopreservation in selected settings
Laser preparation of recipient site
Follicular cell suspension approaches

ACSI Vitiligo Surgery, pp. 365-366.

8. Cultured melanocyte transplantation

74. What is cultured melanocyte transplantation?

It involves harvesting a small autologous skin sample, isolating melanocytes, expanding them in culture over days to weeks, and transplanting the cultured cells onto a prepared stable vitiligo lesion.

75. What is its principal advantage?

It can treat a very large recipient area from a very small donor sample because melanocytes are expanded in culture. The PDF describes donor-to-recipient ratios approaching 1:100 in some settings.

ACSI Vitiligo Surgery, p. 366.

76. What are its types?

Cultured pure melanocyte suspension
Cultured melanocyte-keratinocyte co-culture
Cultured epithelial grafts containing both cell types

77. Why can melanocyte-keratinocyte co-culture be preferred to pure melanocyte culture?

Keratinocytes offer a more physiologic environment, support melanocyte survival and differentiation, and may improve cell function through paracrine growth factors.

78. What are the limitations of cultured melanocyte transplantation?

Expensive
Long duration before transplantation
Requires a cell-culture laboratory
Need for skilled technical personnel
Risk of contamination and viability loss
Lack of uniform standardization
Limited availability
Long-term concerns related to certain older culture additives

79. Can cells be cryopreserved?

Yes. Cultured melanocytes can be cryopreserved in specialized settings for future use. The PDF notes that a substantial proportion of cells may retain viability after storage, but this is laboratory-dependent.

ACSI Vitiligo Surgery, pp. 369-370.

80. What scaffolds have been used for cultured-cell transplantation?

Reported scaffolds include amniotic membrane and hyaluronic-acid microporous sheets. These remain specialized approaches rather than routine exam-practice procedures.

9. Hair follicle transplantation and difficult sites

81. What is the rationale for hair follicle transplantation?

Hair follicles contain a reservoir of melanocyte stem cells and melanocyte precursors in the outer root sheath. Follicular grafting can be useful in hair-bearing areas and in lesions associated with leukotrichia.

82. What is leukotrichia and why does it matter?

Leukotrichia means whitening of hairs within a vitiligo patch. It suggests loss of follicular melanocyte reserve and generally predicts a poorer response to medical treatment and conventional repigmentation.

83. Is leukotrichia an absolute contraindication to surgery?

No. It is a poor prognostic sign, but hair follicular grafting, mini-punch grafting with phototherapy, or cellular methods may produce improvement in selected stable lesions.

ACSI Vitiligo Surgery, pp. 340-341.

84. Which areas have poor surgical outcomes?

Fingertips
Toes
Palms
Soles
Periungual areas
Bony prominences
Highly mobile areas
Mucosal surfaces in some techniques

The poor response is related to absence or paucity of hair follicles, thick epidermis, friction, poor graft retention, and repeated trauma.

85. What is your preferred surgical approach for facial vitiligo?

For a small, stable facial lesion: suction blister epidermal grafting or NCES/MKTP depending on lesion size and expertise.

For a larger facial lesion: NCES/MKTP or ultrathin split-thickness grafting in experienced hands.

86. What is your approach to lip vitiligo?

For a small stable lip lesion, suction blister epidermal grafting is a good option. Split-thickness grafting may be used for a larger lesion. Immobilization is difficult, so counselling regarding liquid diet, use of a straw, minimal lip movement, and careful fixation is important.

87. What is your approach to genital vitiligo?

Non-cultured melanocyte-keratinocyte cell transplantation is generally favoured in experienced centres because tissue grafts from keratinized skin may produce texture and colour mismatch on mucosal surfaces. Take history of recurrent genital herpes and address it appropriately before surgery.

ACSI Vitiligo Surgery, p. 357.

88. What is your approach to acral vitiligo?

Counsel carefully that results are unpredictable. Mini-punch grafting may be used for selected small lesions, especially dorsal fingers and periungual areas, but palms and soles respond poorly to all procedures.

10. Postoperative care and adjuvant phototherapy

89. Why is phototherapy used after grafting?

It stimulates proliferation, migration, and melanogenesis of transferred melanocytes, improves pigment spread and colour matching, and may help reduce perigraft halo or incomplete repigmentation.

ACSI Vitiligo Surgery, pp. 371-373.

90. Which phototherapy is preferred after surgery?

NB-UVB is generally favoured because of its safety profile and lack of psoralen-related adverse effects. Targeted phototherapy or 308-nm excimer laser may be useful for localized lesions.

91. When can postoperative phototherapy begin?

Usually after the graft has taken and dressings have been removed. The PDF broadly describes starting NB-UVB about 2 to 3 weeks after grafting, while some procedures may start treatment 1 to 2 weeks after dressing removal depending on healing and protocol.

ACSI Vitiligo Surgery, pp. 371-373.

92. What are essential postoperative instructions?

Strict immobilization of the grafted area
Keep dressings dry and undisturbed
Avoid friction, exercise, and trauma
Return if pain, bleeding, discharge, fever, or dressing displacement occurs
Avoid removing dressings prematurely
Follow the scheduled review for graft take and phototherapy
Use sun protection after healing if post-inflammatory hyperpigmentation is a concern

93. How do you assess success after surgery?

Assess:

Percentage of repigmentation
Colour match
Texture match
Absence of cobblestoning, halo, scar, or donor-site morbidity
Patient satisfaction
Stability at the grafted and distant sites
Standardized serial photographs and Wood lamp examination when needed

11. Complications and management

94. Classify complications of vitiligo surgery.

Recipient-site complications

Graft failure or rejection
Hematoma and seroma
Infection
Hyperpigmentation or hypopigmentation
Perigraft halo and achromic fissures
Cobblestoning
Sinking pits
Milia and inclusion cysts
Hypertrophy, beading, curling, or stuck-on appearance
Variegated colour match
Recurrence or Koebnerization

Donor-site complications

Hyperpigmentation or hypopigmentation
Superficial scar
Hypertrophic scar or keloid
Infection
Contact dermatitis from adhesive
Donor-site vitiligo or Koebnerization

ACSI Vitiligo Surgery, pp. 375-381.

95. Which procedure has the most adverse effects?

Mini-punch grafting, followed by split-thickness grafting, tends to have more procedure-related adverse effects. Cellular grafting generally produces fewer textural complications.

96. What causes hyperpigmentation after surgery?

It is common, especially in darker phototypes and exposed sites. It may reflect post-inflammatory pigmentation, phototherapy exposure, melanocyte activity, or graft thickness. Prevention includes thin grafts, careful technique, sensible phototherapy, and sun protection.

97. How do you manage post-grafting hyperpigmentation?

Many cases improve gradually. Counsel first. Use photoprotection. Depending on the clinical situation, dermatologists may use topical retinoids or superficial procedures cautiously after complete healing. Avoid aggressive depigmenting therapy that might provoke vitiligo.

98. What causes perigraft halo?

It occurs due to graft contraction, inadequate extension of graft beyond lesion margins, incomplete pigment spread, or recurrence of disease.

99. How do you prevent and manage perigraft halo?

Prevent it by using a graft larger than the lesion, overlapping edges appropriately, adequate immobilization, and avoiding contraction. Management includes NB-UVB, targeted phototherapy, or repeat localized transplantation after confirming stability.

100. What causes graft rejection?

Most commonly:

Hematoma, seroma, or air under the graft
Infection
Excessive movement
Poor fixation
Incorrect orientation
Inadequate recipient bed
Active vitiligo

101. What are the causes of milia after split-thickness grafting?

Milia are due to retained epithelial elements after dermabrasion or obstructed sweat ducts with rapid epithelial proliferation. They are common on face and neck, often resolve spontaneously, and can be expressed if persistent.

102. How do you prevent scarring?

Avoid surgery in keloid-prone patients
Choose concealed donor sites
Use thin grafts
Avoid deep dermabrasion
Use small punch size
Maintain sterile technique and avoid infection
Prefer suction blister or cellular methods if scarring risk is significant

103. What is the single most important way to avoid complications?

Correct patient selection, particularly confirming disease stability, followed by meticulous technique and reliable postoperative immobilization.

12. Site-based examiner questions

104. What is the preferred procedure for a small stable patch on the eyelid?

Suction blister epidermal grafting or NCES/MKTP. A very thin split-thickness graft can also be used by an experienced surgeon with eye protection and strict immobilization.

105. What is the preferred procedure for a large stable lesion over the trunk?

Thin split-thickness grafting or NCES/MKTP. The choice depends on lesion size, equipment, donor area, cost, and surgical expertise.

106. What is preferred for a small acral lesion?

Mini-punch grafting can be considered, but the patient must be counselled that acral responses are less predictable.

107. What is preferred for a small lesion at the angle of mouth?

Micropigmentation or carefully selected surgical management may be considered because graft retention is difficult. The PDF notes tattooing as an occasional option for urgent camouflage or difficult areas, but it has limitations such as colour change, fading, and mismatch.

ACSI Vitiligo Surgery, pp. 383-384.

108. Why do palms and soles respond poorly?

They are glabrous, have no hair follicles, have thick epidermis, are exposed to continuous friction and pressure, and can be difficult to prepare and immobilize.

13. Recent advances beyond the PDF

These are useful if the examiner asks, “What are the recent advances in vitiligo surgery?”

109. What recent evidence supports surgical treatment?

A 2021 systematic review and meta-analysis of 117 studies involving 8,776 patients found that surgery can be effective for stable refractory vitiligo, although outcomes vary by method, patient age, subtype, and anatomical site. Rates of more than 90% repigmentation were reported as approximately 72% for thin skin grafting, 62% for suction blister grafting, 57% for cultured epidermal cell suspension, 53% for punch grafting, and 48% for non-cultured epidermal cell suspension. These are pooled study outcomes, not guaranteed individual results. The 2021 JAMA Dermatology meta-analysis supports tailoring technique to lesion site, size, and patient factors.

110. What is autologous skin cell suspension transplantation?

It is a point-of-care cellular technique that produces a suspension containing melanocytes, keratinocytes, and fibroblasts from a small autologous skin sample. It is placed on a laser-resurfaced stable vitiligo lesion, usually with adjunctive NB-UVB.

111. Is there trial evidence for autologous skin cell suspension?

Yes. In a multicentre randomized within-subject trial, 36% of autologous skin-cell-suspension-treated lesions achieved at least 80% repigmentation by week 24, versus 0% with NB-UVB-only control lesions; benefit remained durable to week 52. The sample was small, so site-specific conclusions remain limited. See the 2024 randomized trial.

112. What does recent meta-analysis say about cultured versus non-cultured melanocyte transplantation?

A 2025 meta-analysis of 17 studies and 1,199 patients found no statistically significant difference between cultured melanocyte transplantation and non-cultured epidermal cell suspension overall. It also found that adding phototherapy to cell transplantation can improve outcomes, although the authors noted limitations in the size and quality of available evidence. See the 2025 meta-analysis.

113. What are modern recipient-site preparation methods?

Recent practice increasingly uses:

Fractional or fully ablative CO2 laser
Er:YAG laser
Microneedling-assisted transplantation
Controlled superficial dermabrasion
Other less traumatic methods designed to create a uniform receptive bed

These may improve control of depth and reduce some mechanical trauma, but outcomes depend on technique, site, and operator experience.

114. What is microneedling-assisted cell transplantation?

Instead of traditional dermabrasion, microneedling creates controlled microchannels in the recipient skin, after which a melanocyte-keratinocyte suspension is applied. It may reduce surface trauma and is being studied as a simpler recipient-site preparation technique. It remains an evolving approach rather than a universal replacement for standard methods.

115. What is follicular cell suspension?

It is a cell-based procedure using cells obtained from hair follicles, particularly the outer root sheath. Since follicles contain melanocyte precursors, this method is of interest for hairy areas and lesions with leukotrichia. Evidence is still less mature than for conventional NCES/MKTP.

116. What is smash grafting?

Smash grafting is a tissue-based hybrid technique in which a thin graft is fragmented or “smashed” into small pieces and spread over a prepared recipient site. It may increase coverage from limited donor tissue, but results and standardization vary.

117. What is the future role of regenerative medicine?

Experimental directions include platelet-rich plasma, exosome-based approaches, stem-cell-related strategies, optimized biomaterial scaffolds, and improved melanocyte culture systems. These are not routine standard-of-care surgical therapies yet. A 2025 systematic review of regenerative approaches found early clinical interest but insufficient high-quality evidence to make them standard practice.

118. What is the role of JAK inhibitors in relation to surgery?

Topical and systemic JAK inhibitors are medical immunomodulatory treatments, not grafting techniques. Their theoretical value around surgery is better disease control and maintenance of repigmentation, but evidence for routine perioperative use specifically to improve graft survival is still developing. They should not be presented as a replacement for proving disease stability before surgery.

119. What is an important modern concept in surgical planning?

The modern approach is not simply “which graft is best?” It is which technique is best for this patient and this site, after confirming stability and addressing ongoing inflammation. Cellular methods often offer better donor-site efficiency and colour match, while tissue grafts remain useful when resources are limited or for appropriately selected localized lesions.

14. Rapid-fire viva questions

120. One-line definition of NCES?

Autologous transplantation of a non-cultured melanocyte-keratinocyte-rich epidermal cell suspension onto a prepared stable vitiligo lesion.

121. Best indication for surgery?

Stable, treatment-resistant segmental vitiligo.

122. Minimum accepted stability period in your PDF?

One year without new lesions, progression, or Koebner phenomenon.

123. Test graft positive when?

Pigment spreads more than 1 mm beyond the graft margin after approximately 12 weeks.

124. Best tissue graft for small facial vitiligo?

Suction blister epidermal graft.

125. Easiest and least expensive procedure?

Mini-punch grafting.

126. Main complication of mini-punch grafting?

Cobblestoning.

127. Main limitation of suction blister grafting?

It is time-consuming and suitable only for relatively small areas.

128. Main advantage of split-thickness grafting?

Rapid coverage of a large area with relatively uniform pigmentation.

129. Main advantage of NCES/MKTP?

A small donor area can cover a much larger recipient area with good texture and colour match.

130. Most important postoperative instruction?

Strict immobilization and protection of the graft.

131. Preferred postoperative phototherapy?

NB-UVB.

132. Why is genital vitiligo technically difficult?

Conventional keratinized tissue grafts can cause texture and colour mismatch on non-keratinized mucosa; cellular transplantation is often preferred.

133. Why is acral vitiligo difficult?

Thick epidermis, trauma, friction, limited follicular melanocyte reservoir, and difficulty in graft uptake.

134. Is surgery indicated in unstable generalized vitiligo?

No. First stabilize disease medically and reassess later.

135. Does successful surgery prevent future vitiligo?

No. It can repigment treated lesions but does not eliminate the possibility of disease reactivation elsewhere or at the grafted site.

Last-minute practical exam checklist

When shown a patient with vitiligo, say:

Confirm diagnosis and clinical subtype.
Assess stability: no new lesion, no enlargement, no Koebner phenomenon for one year.
Document lesion site, size, hair involvement, leukotrichia, and activity.
Look for keloidal tendency and examine old scars.
Discuss the procedure best suited to the site.
Explain that surgery repigments but does not cure autoimmunity.
Obtain photographs, informed consent, and counsel about recurrence and complications.
Emphasize immobilization and follow-up phototherapy.

Your PDF’s core message is that patient selection is more important than technical sophistication. A perfect surgical technique will still fail if surgery is performed in active vitiligo.

What are the blood markers of activity in vitiligo

Reading File

Finding Sources

Searching PubMed

vitiligo AND biomarkers

Searching PubMed

vitiligo AND activity biomarkers

Searching the Web

vitiligo disease activity blood biomarkers CXCL10 CD8 systematic review 2024 2025

There is no validated routine blood test that reliably defines vitiligo activity in clinical practice or clears a patient for surgery. Activity is assessed mainly by history, examination, VIDA score, Wood lamp assessment, and sometimes a test graft.

Blood markers studied in active vitiligo

Marker	Typical finding in active disease	Practical status
Serum CXCL10 (IP-10)	Often increased, and correlates with progressive disease activity in several studies	Most promising research marker, but no validated clinical cutoff
Serum CXCL9	Often increased in active versus stable vitiligo	Research use
CXCL11	May be elevated as part of the IFN-gamma chemokine pathway	Research use
IFN-gamma	May be elevated, reflecting Th1/CD8+ cytotoxic immune activation	Research use
Circulating CXCR3+ CD8+ T cells	Increased, especially in progressive disease	Research/flow cytometry, not routine
IL-17, IL-1 beta, TNF-alpha	Reported elevation in some active cases	Inconsistent, not recommended for routine assessment
Soluble CD25 and soluble CD27	Can reflect T-cell activation and have been studied as biomarkers	Research use
Oxidative-stress markers	Altered antioxidant status, increased lipid peroxidation/ROS-related markers have been reported	Research use, nonspecific
Melanocyte autoantibodies	May be detectable in some patients	Not a dependable measure of current activity

Best viva answer

“At present, there is no routinely recommended blood marker of vitiligo activity. Serum CXCL10 is the most studied and potentially useful biomarker; CXCL9, IFN-gamma, and circulating CXCR3-positive CD8 T cells may also be raised in active disease. However, none has a validated cutoff or is routinely used to decide vitiligo surgery. Clinical stability remains the standard.”

The rationale is that active vitiligo is driven largely by IFN-gamma-mediated recruitment of melanocyte-directed cytotoxic CD8+ T cells through the CXCR3-CXCL9/CXCL10 axis. The CXCL10 clinical-marker study found higher serum CXCL9 and CXCL10 in progressive than stable vitiligo, with CXCL10 associated with disease severity in progressive disease.

What should be used clinically to assess activity?

For practical purposes, use:

New lesions or enlargement of lesions in the preceding year
Koebner phenomenon
Confetti depigmentation
Trichrome lesions or poorly defined borders
Inflammatory border or itch, when present
VIDA score
Serial standardized photographs and Wood lamp examination
Test graft if stability is uncertain before surgery

For vitiligo surgery, your PDF recommends a patient with no new lesions, no progression, and no Koebner phenomenon for at least 1 year, ideally VIDA 0 or -1. ACSI Vitiligo Surgery, pp. 329-331. Fitzpatrick's likewise emphasizes clinical markers of disease activity rather than a routine laboratory assay.

Do not confuse these with activity markers

The following may be ordered to identify associated autoimmune disease, especially autoimmune thyroid disease, but do not measure vitiligo activity:

TSH
Free T4
Anti-thyroid peroxidase antibody
Anti-thyroglobulin antibody
Fasting glucose/HbA1c, vitamin B12, or other tests when clinically indicated

A concise recent review notes that blood biomarkers including CXCL9, CXCL10, IFN-gamma, cytokines, soluble T-cell activation markers, autoantibodies, and oxidative-stress measures remain under investigation rather than standard care. Current vitiligo biomarker overview.

This is a shared conversation. Sign in to Orris to start your own chat.