Here is a comprehensive, structured set of HOD questions for this case, organized exactly as a senior faculty would probe a 3rd year PG resident in a ward round or case presentation:
HOD Viva Questions — 37F, Nulligravida, 12×10 cm Posterior Intramural Fibroid with Cystic Degeneration, Fertility Preservation Desired
🔷 SECTION 1: CASE COMPREHENSION & DIAGNOSIS
Q1. How would you classify this fibroid using the FIGO leiomyoma classification system?
Expected Answer:
The FIGO system classifies fibroids as:
- Type 0: Pedunculated intracavitary
- Type 1: <50% intramural (submucosal)
- Type 2: ≥50% intramural (submucosal)
- Type 3: Contacts endometrium, 100% intramural
- Type 4: Entirely intramural ← this case (posterior intramyometrial wall, no cavity/serosal extension described)
- Type 5: Subserosal ≥50% intramural
- Type 6: Subserosal <50% intramural
- Type 7: Pedunculated subserosal
- Type 8: Cervical, broad ligament, parasitic
"This is a FIGO Type 4 intramural leiomyoma given its posterior myometrial location with no mention of endometrial or serosal involvement."
Q2. The patient has cystic degeneration — what types of degeneration occur in fibroids, and what is the pathophysiology?
Expected Answer:
As fibroids enlarge, they outgrow their blood supply, leading to ischemia and cell death. Types of degeneration:
| Type | Features |
|---|
| Hyaline | Most common (65%); replacement by acellular fibrous tissue |
| Cystic | Liquefaction of hyaline areas; fluid-filled spaces on US/MRI |
| Calcific | "Womb stone"; seen post-menopausally, eggshell calcification on X-ray |
| Red (Carneous) | Hemorrhagic infarction; classic in pregnancy (2nd trimester); acute pain + fever |
| Myxoid | Mucoid degeneration; gelatinous gross appearance |
| Fatty (lipomatous) | Rare; fat replacement |
| Sarcomatous | Malignant transformation; LMS; <0.1% |
"The type of degeneration is unrelated to clinical symptoms." — Berek & Novak
Q3. This fibroid is 12×10 cm — how would you confirm cystic degeneration on imaging?
Expected Answer:
- USG: Anechoic/hypoechoic areas within fibroid, no internal vascularity on Doppler (differentiates from solid component)
- MRI (gold standard): High T2 signal within the fibroid mass (fluid); MRI is superior for mapping exact location, number, depth of intramural extension, and proximity to endometrial cavity — critical for surgical planning
- MRI sensitivity for submucous fibroids: 100%, specificity: 91% (Berek & Novak)
- SIS (saline infusion sonography): Assess endometrial cavity involvement
Q4. The patient has no AUB — how do you explain this?
Expected Answer:
- AUB is primarily associated with submucosal (Type 0, 1, 2) fibroids because they distort the endometrial cavity and increase surface area/vascularity
- Type 4 purely intramural fibroids have no direct endometrial contact, hence no AUB
- The FIGO data: Hemoglobin <12 most strongly correlated with Type 0 fibroids; intramural fibroids without cavity distortion rarely cause heavy bleeding
- Trap question alert: HOD may ask "then what is causing the abdominal pain and distension?" → See Section 2
Q5. What is the differential diagnosis of a 12×10 cm posterior uterine mass in a 37-year-old?
Expected Answer:
- Uterine leiomyoma (most likely) — benign
- Leiomyosarcoma (LMS) — must always be excluded; prevalence ~1/1,960 to 1/1,429 surgeries for presumed fibroids (Pritts meta-analysis, 133 studies; AHRQ update)
- Adenomyoma / focal adenomyosis
- Ovarian mass (right ovarian cyst, dermoid, endometrioma) — assess separately
- Broad ligament fibroid
- Retroperitoneal sarcoma
- Cervical fibroid
"No reliable preoperative method exists to differentiate fibroid from LMS."
🔷 SECTION 2: SYMPTOM ANALYSIS
Q6. Patient has dull abdominal pain for 2 days. How do you explain this in the context of cystic degeneration?
Expected Answer:
- Cystic degeneration causes ischemic pain as fibroid outgrows blood supply
- Large fibroid (12×10 cm) causes pressure symptoms, pelvic heaviness, and dull aching
- Management of pain from degeneration: Analgesics (NSAIDs/paracetamol) + observation — usually self-limiting
- Torsion of pedunculated fibroid can cause acute severe pain (not the case here — this is intramural)
- Red degeneration (typically in pregnancy): fever + localized tenderness + leukocytosis — exclude here
Q7. Patient has intermittent passage of stool. How do you explain this and what is your concern?
Expected Answer:
- Posterior fibroid of 12×10 cm compresses the rectosigmoid → intermittent constipation, tenesmus, altered bowel habits
- Must exclude: rectal/sigmoid invasion (rare), extrinsic compression
- Clinical significance: Large posterior fibroid makes abdominal myomectomy technically challenging — posterior uterine incision risks opening uterine cavity; difficult hemostasis; adhesions to bowel postoperatively
- HOD trap: "What about colorectal malignancy?" → Should be considered and ruled out (colonoscopy if needed, especially intermittent stool passage over 1 year)
Q8. Why does this patient NOT have urinary symptoms?
Expected Answer:
- Urinary frequency/urgency/retention is typical of anterior/fundal/large fibroids pressing on the bladder
- Posterior fibroid is away from the bladder → bladder habits normal (consistent with clinical findings)
- UAE studies: 35% reduction in uterine volume led to 68% improvement in urinary symptoms (Berek & Novak)
🔷 SECTION 3: FERTILITY CONSIDERATIONS
Q9. Patient wants to preserve fertility and has just remarried 1 month ago. How does this change your management plan?
Expected Answer:
- Myomectomy is the procedure of choice for symptomatic fibroids in women desiring fertility
- Key fertility concerns:
- Large posterior intramural fibroid → may distort endometrial cavity → implantation failure
- Post-myomectomy intrauterine adhesions (Asherman's)
- Post-myomectomy uterine scar → risk of uterine rupture in future pregnancy
- Recurrence of fibroids (20–25% within 10 years)
- Victor Bonney (1931): "Restoration and maintenance of physiologic function is the ultimate goal of surgical treatment" — still the guiding principle
- Counsel patient: surgery → adequate healing time → at least 6–12 months before attempting conception post-myomectomy
Q10. What is the risk of uterine rupture after myomectomy in a future pregnancy?
Expected Answer:
- Overall uterine rupture rate post-myomectomy: 0.93% (7/756 viable deliveries; 11 studies, 1,034 pregnancies)
- Trial of labor (TOL) after myomectomy: 0.47% rupture rate — similar to TOL after previous LSCS (0.5–1%)
- Before onset of labor: 1.52% rupture
- 5 of 7 ruptures occurred before 36 weeks
- Posterior intramural myomectomy → deeper uterine wall incision → higher scar risk than subserosal
- After laparoscopic myomectomy: rupture associated with failure to do multilayer closure, use of monopolar/bipolar energy for hemostasis (devascularizes myometrium, impairs healing)
- Recommendation: Elective cesarean section in subsequent pregnancy after myomectomy of large/posterior fibroid — do NOT allow TOL unless adequately counseled
Q11. What are the pre-pregnancy counseling points for this patient post-myomectomy?
Expected Answer:
- Wait minimum 6–12 months before conception (allow scar maturation)
- Register antenatal care early; serial USG for scar integrity
- Delivery by elective LSCS (given posterior intramural, large size, multilayer closure)
- Watch for signs of uterine rupture in pregnancy — pain, fetal distress, bleeding
- Fibroid recurrence counseling — 20–25% recurrence; may need repeat surgery
- Ovarian reserve assessment — at 37 years, AMH, AFC to counsel on fertility timeline
🔷 SECTION 4: SURGICAL MANAGEMENT
Q12. What is your surgical approach for this case and why?
Expected Answer:
- Open (Abdominal) Myomectomy is the preferred approach for:
- Fibroid >10 cm (this is 12×10 cm)
- Multiple fibroids (assess on MRI)
- Posterior intramural location
- Need for multilayer closure (critical for fertility preservation)
- Laparoscopic Myomectomy can be attempted by experienced surgeons:
- Case series: feasible up to 15 cm (2 conversions in 144 women with mean 7.8 cm; 3 conversions in 332 women up to 15 cm)
- Requires: intracorporeal suturing expertise, careful hemostasis, proper morcellation
- Benefit: Less pain, faster recovery, reduced blood loss (meta-analysis: 6 RCTs, 576 patients)
- Operative times are longer
- Morcellation concern: Risk of occult LMS dissemination → use contained in-bag morcellation or mini-laparotomy extraction — FDA restrictions on power morcellation since 2014
- Robotic myomectomy: no measurable advantage over laparoscopic in expert hands
Q13. What preoperative preparations will you do for this patient?
Expected Answer:
- MRI pelvis: Map exact location, number of fibroids, cavity involvement, proximity to endometrial cavity and posterior cul-de-sac, rule out adenomyosis
- Complete blood count: Rule out anemia
- Tumor markers: CA-125 (elevated in LMS, endometriosis), LDH (elevated in LMS) — though non-specific
- GnRH agonist (Leuprolide/Triptorelin): 3–6 months preoperatively
- Reduces fibroid volume by 30–50%
- Stops bleeding → corrects anemia (74% patients achieve Hb >12 with GnRH-a + iron)
- Creates pseudomenopause → softens fibroid, reduces vascularity → less intraoperative blood loss
- Caution: Makes tissue planes less distinct → may increase risk of incomplete removal
- Stop 1 month before surgery
- Iron therapy (IV iron preferred): IV iron increases Hb 3.0 g/dL vs 0.8 g/dL with oral iron (RCT data); consider if anemic
- Bowel prep: Given posterior fibroid abutting rectum
- Ureteric stents (urological consult): Consider if mass distorting ureteral anatomy
- Blood grouping and cross-matching + consent for hysterectomy (in case of uncontrollable hemorrhage)
- Cell saver/tranexamic acid preparation
Q14. What are the intraoperative steps and precautions for abdominal myomectomy of a posterior fibroid?
Expected Answer:
- Incision: Pfannenstiel or midline vertical (for 12 cm fibroid, vertical preferred for access)
- Vasopressin injection: Dilute vasopressin (20 units in 100 mL saline) into myometrium → vasospasm → reduced blood loss
- Tourniquet / Vascular clamps: Uterine/ovarian vessel occlusion
- Incision on fibroid: Transverse/vertical incision on posterior uterine wall over the fibroid
- Enucleation: Sharp/blunt dissection of the fibroid from the pseudocapsule
- Posterior location hazards:
- Proximity to rectosigmoid → risk of bowel injury
- Proximity to uterine vessels and ureter
- Risk of entering uterine cavity → increases Asherman's risk
- Multilayer closure of myometrium: Mandatory — reduces risk of uterine rupture; no dead space
- Avoid excessive electrosurgery on myometrium (impairs healing → rupture risk)
- Adhesion prevention agents: Interceed, Seprafilm on posterior surface
- Specimen: Send for histopathology to rule out LMS
Q15. What are the complications of myomectomy you will consent this patient for?
Expected Answer:
Intraoperative:
- Hemorrhage → conversion to hysterectomy (consent mandatory)
- Bowel injury (posterior fibroid)
- Ureteric injury
- Inadvertent entry into uterine cavity
Postoperative:
- Infection, wound dehiscence
- Intrauterine adhesions (Asherman syndrome) → infertility
- DVT/PE
- Uterine rupture in subsequent pregnancy
Long-term:
- Fibroid recurrence: ~20–25% within 10 years; higher in younger patients and those with multiple fibroids
- Need for repeat surgery
- Failed fertility despite myomectomy
🔷 SECTION 5: MEDICAL AND ALTERNATIVE TREATMENTS
Q16. Can you offer non-surgical treatment for this patient? What are the options?
Expected Answer:
- GnRH agonists (leuprolide, goserelin, triptorelin):
- Reduce volume 30–50% over 3–6 months
- Not curative — fibroids regrow after stopping (within 3–6 months)
- Used as bridge to surgery or to correct anemia
- Side effects: hypoestrogenic symptoms (hot flashes, bone loss)
- Add-back therapy (norethisterone/estrogen) prevents bone loss
- Ulipristal acetate (selective progesterone receptor modulator):
- Effective but regulatory concerns (hepatotoxicity) — withdrawn in many countries
- Mifepristone (antiprogestin): Reduces fibroid size; limited data
- UAE (Uterine Artery Embolization):
- Reduces fibroid volume ~35–40%
- NOT recommended when fertility preservation is the primary goal — risk of ovarian damage, uterine ischemia, impaired implantation, placental complications
- Can be considered if surgery is contraindicated
- Focused Ultrasound (MR-HIFU): Non-invasive; limited data for large fibroids; not for fertility-seeking patients (yet)
- Observation: Acceptable if asymptomatic — 77% of women with mild symptoms do not worsen at 1 year
🔷 SECTION 6: CLASSIC HOD TRAP QUESTIONS
Q17. If intraoperatively you find the fibroid is densely adhered to the posterior cul-de-sac/rectum — what will you do?
- Answer: Do NOT forcefully separate. Obtain a colorectal surgeon; consider staged procedure. If separation risks bowel injury → leave fibroid remnant, close, complete surgery safely.
Q18. Pre-op MRI shows a rapidly enlarging fibroid with irregular margins and central necrosis — what is your concern and how will you counsel the patient?
- Answer: Raise suspicion for leiomyosarcoma. Cannot differentiate from benign fibroid preoperatively with certainty. Counsel patient about LMS risk (1/1,429 to 1/1,960 surgeries). Proceed to surgery; send specimen urgently for frozen section/histopathology. If LMS confirmed → staging, oncology referral, potentially hysterectomy + BSO.
Q19. LDH isoenzyme 3 (LDH3) is elevated preoperatively — what does it suggest?
- Answer: Elevated LDH-3 is associated with LMS. LDH-3 / total LDH ratio >0.7 is suspicious for malignant degeneration (though not highly sensitive/specific). This would prompt more thorough counseling and surgical planning.
Q20. The patient is 37 years old and has just married. Can you delay surgery?
- Answer: Given 12×10 cm size with symptoms (pain, bowel compression, progressive distension) + fertility desire — delay carries risks:
- Further fibroid growth (9% per year average)
- Worsening bowel/bladder symptoms
- Increasing surgical difficulty
- Reduced ovarian reserve with age (AMH declines)
- Recommend surgery sooner than later, with pre-op GnRH agonist for 3 months to optimize conditions
Q21. Will you do a hysteroscopy preoperatively? Why?
- Answer: Yes — to rule out submucous component, endometrial polyp, or cavity distortion not apparent on USG. A Type 4 fibroid may have subtle endometrial proximity. Also to document baseline endometrial cavity integrity before myomectomy.
Q22. What interval will you advise before she attempts conception after surgery?
- Answer: Minimum 6–12 months. Most guidelines recommend 12 months for large posterior intramural fibroids with deep myometrial entry and multilayer closure, to allow adequate scar maturation before the mechanical stress of pregnancy.
🔷 SECTION 7: PATHOLOGY QUESTION
Q23. HPE of the removed fibroid shows "10 mitoses/10 HPF with no coagulative necrosis and no atypia" — what is your diagnosis?
- Answer: Mitotically active leiomyoma (benign) — WHO criteria: 10–15 mitoses/10 HPF, no atypia, no coagulative necrosis. Often seen in women taking exogenous hormones or in pregnancy. Not malignant. No additional treatment needed.
Q24. How do you differentiate LMS from fibroid on histology?
- Answer: LMS requires ALL THREE:
- ≥10 mitoses/10 HPF
- Diffuse moderate-to-marked nuclear atypia
- Coagulative (ischemic) tumor cell necrosis
- LMS: 5-year survival Stage I = 61%; Stages III–IV = ~30%
Summary Checklist for Your HOD Round
| Domain | Key Points |
|---|
| Classification | FIGO Type 4 intramural |
| Degeneration | Cystic — outgrown blood supply |
| Diagnosis | MRI gold standard |
| Fertility plan | Myomectomy (open preferred for 12 cm) |
| Preop prep | MRI, CBC, GnRH agonist 3 months, IV iron, bowel prep |
| Surgery | Multilayer closure, vasopressin, adhesion barrier |
| Rupture risk | 0.47% TOL; elective LSCS advised |
| Post-op | 6–12 months wait; serial USG |
| Recurrence | 20–25% at 10 years |
| Malignancy | LMS: 1/1,429; exclude by HPE |
*Sources: Berek & Novak's Gynecology (16th ed.), Sabiston Textbook of Surgery; Meta-analysis: Giannini et al., Eur J Obstet Gynecol Reprod Biol 2024 [PMID 38581885]*This covers every angle your HOD is likely to probe. A few key points to memorize cold before your round:
- FIGO Type 4 — this fibroid; know all 8 types by heart
- Cystic degeneration — outgrown blood supply, no relationship to symptoms
- No AUB because it's not submucosal — the trap question HODs love
- LMS prevalence — 1 in 1,429 to 1 in 1,960 (Pritts meta-analysis + AHRQ)
- Uterine rupture — 0.47% with TOL, 1.52% before labour; multilayer closure is non-negotiable
- GnRH agonist 3 months preop — volume reduction 30–50%, correct anemia
- Open myomectomy preferred for 12 cm posterior fibroid — but must know laparoscopic feasibility data (up to 15 cm in expert hands)
- Consent for hysterectomy — mandatory even in fertility-preserving cases
- 12 months before conception after deep posterior myomectomy
- Elective LSCS in next pregnancy
Good luck with your HOD round!