Varicose Veins: Associated Syndromes and Family History

Definition and Classification

• Primary - originate in the superficial system due to defective valve structure, intrinsic vein wall weakness, or high intraluminal pressure
• Secondary - result from deep-venous hypertension, deep-venous obstruction, or incompetent perforating veins; also caused by arteriovenous fistulas

• Current Surgical Therapy 14e
• Harrison's Principles of Internal Medicine 22E

Family History and Genetic Predisposition

• Harrison's Principles of Internal Medicine 22E states directly: "Approximately one-half of these patients have a family history of varicose veins."
• Mulholland and Greenfield's Surgery confirms: "Relevant risk factors for varicose veins are advanced age, a positive family history, female gender, multiparity, and obesity."
• Current Surgical Therapy 14e lists family history as a primary risk factor for venous valvular dysfunction, alongside female gender, activity level, and occupation.
• Mulholland references a 2012 Circ Cardiovasc Genet review on "familial, genetic, and congenital aspects of primary varicose vein disease," which confirms a clear hereditary component.
• Mulholland also notes that hereditary varicose veins tend to appear during the second decade of life, earlier than the typical adult-onset pattern.
• Gray's Anatomy for Students notes that "some individuals have a genetic predisposition to developing varicose veins."

Specific genetic/connective tissue associations:

Syndromes Associated with Varicose Veins

1. Klippel-Trenaunay Syndrome (KTS)

1. Cutaneous port-wine capillary naevus involving the lower limb
2. Varicose veins - unilateral, appearing at birth or in childhood
3. Soft tissue and bony hypertrophy (hemihypertrophy) of the involved limb

• Deep veins may be hypoplastic or aplastic
• Associated lymphatic obstruction
• Visceral lesions in ~20% of patients (GI tract, bladder, kidney, lung)
• GI bleeding (most common site: distal colon and rectum)
• Genetic defects in the regulation of angiogenic factor VG5Q have been demonstrated in KTS patients
• Not familial (mesodermal developmental abnormality)
• Increased risk of VTE - LMWH prophylaxis mandatory for surgery

Bailey and Love's Short Practice of Surgery 28th Edition - Two patients with Klippel-Trenaunay syndrome

• Bailey & Love's Short Practice of Surgery 28e
• Sleisenger & Fordtran's Gastrointestinal and Liver Disease

2. Parkes-Weber Syndrome

• Multiple arteriovenous fistulas causing venous hypertension
• Higher-flow AV shunting (vs. KTS which is a pure low-flow condition)
• Can lead to venous ulceration and high-output cardiac failure
• Presents in childhood
• Bailey & Love's Short Practice of Surgery 28e
• Harrison's Principles of Internal Medicine 22E

3. May-Thurner Syndrome (Iliac Vein Compression Syndrome)

• Left common iliac vein compressed by the overlying right common iliac artery
• Causes secondary deep-venous insufficiency and varicose veins
• May present with left-leg varicosities, DVT, edema, and venous ulcers
• Nonthrombotic stenosis may be a "permissive lesion" before becoming clinically significant
• Harrison's Principles of Internal Medicine 22E
• Mulholland and Greenfield's Surgery

4. Nutcracker Syndrome (Renal Vein Compression)

• Compression of the left renal vein between the aorta and superior mesenteric artery
• Associated with scrotal varicosities (varicocele) due to gonadal vein incompetence
• Perineal and vulvar varicosities may also signal pelvic venous insufficiency or iliac obstruction
• Sabiston Textbook of Surgery
• Current Surgical Therapy 14e

5. Pelvic Congestion Syndrome

• Seen in multiparous women with pelvic varicosities
• Varicosities of the leg in conjunction with chronic pelvic pain, dyspareunia, and bladder fullness on standing
• Caused by ovarian or pelvic venous insufficiency
• Diagnosed with MR venous imaging (MRVI) or conventional pelvic venography
• Treatment ranges from hormonal suppression to ovarian vein embolization
• Sabiston Textbook of Surgery

6. Ehlers-Danlos Syndrome (Type IV)

• Connective tissue dysregulation weakens the vein wall
• Varicose veins are a direct consequence of the structural defect
• Also associated with arterial rupture and small bowel ischemia
• Mulholland and Greenfield's Surgery
• Current Surgical Therapy 14e

7. Post-Thrombotic Syndrome (Post-Phlebitic Syndrome)

• Secondary varicose veins following deep-vein thrombosis
• DVT causes valve scarring; recanalization fails to restore valve function
• Results in chronic venous hypertension, varicosities, edema, and ulceration
• Approximately 50% of deep venous valvular dysfunction is secondary to DVT
• Mulholland and Greenfield's Surgery

8. Other Associations

• Leg telangiectasias may signal systemic autoimmune diseases: SLE, dermatomyositis, and xeroderma pigmentosum - Sabiston Textbook of Surgery
• Maffucci syndrome - venous malformations with hemangiomas associated with varicose veins - Dermatology 5e

Summary Table

Breast Lymphatic Drainage: Communication with the Opposite Breast

Overview of Normal Breast Lymphatic Drainage

Figure: Lymphatic drainage routes of the breast (A = axillary levels, B = left breast showing all collecting routes including direct route "To contralateral node", C = arterial supply). Fischer's Mastery of Surgery 8e

Primary drainage routes (from subareolar plexus):

• Sabiston Textbook of Surgery
• Schwartz's Principles of Surgery 11e
• Fischer's Mastery of Surgery 8e

How Lymphatics Communicate with the Opposite (Contralateral) Breast

Pathway 1: Via the Internal Mammary (Parasternal) Nodes - The Most Important Route

1. Lymph from the medial quadrants of the breast drains through lymph vessels that accompany the perforating branches of the internal mammary artery, piercing the intercostal spaces (predominantly 2nd, 3rd, 4th).
2. These vessels enter the parasternal (internal mammary) lymph nodes, which lie along both sides of the sternum.
3. The parasternal nodes on both sides of the midline are interconnected by lymphatic anastomoses across the anterior chest wall and pre-sternal region.
4. From the parasternal nodes on one side, tumor cells may spread across the midline to the opposite parasternal nodes, and from there to the contralateral breast lymphatics or contralateral axilla.

"The parasternal lymph nodes, which are distributed along the thoracic vessels, chiefly drain the medial portion of the breast. From there, tumor cells may spread across the midline to the opposite side."

• General Anatomy and Musculoskeletal System, THIEME Atlas of Anatomy

Pathway 2: Via the Subareolar (Sappey's) Plexus - Direct Cross Communication

• Communicates freely with both the right and left subareolar plexuses via the anterior chest wall skin lymphatics and the pre-sternal lymphatic network
• Acts as a "crossroads" allowing lymph to flow to the contralateral breast directly

"The subareolar lymphatic plexus drains... also to interpectoral, deltopectoral, supraclavicular, and parasternal nodes, opposite breast, abdominal lymph nodes."

• Fischer's Mastery of Surgery 8e

Summary Diagram of Cross-Breast Communication

LEFT BREAST
    ↓
Subareolar Plexus (Sappey's plexus)
    |
    ├── Medial collecting route
    |         ↓
    |    Internal Mammary / Parasternal Nodes (LEFT)
    |         ↓
    |    ←── Anastomosis across STERNUM ───→
    |         ↓
    |    Internal Mammary / Parasternal Nodes (RIGHT)
    |         ↓
    |    RIGHT BREAST lymphatics / contralateral axilla
    |
    └── Pre-sternal skin lymphatics
              ↓
         Direct to RIGHT subareolar plexus
              ↓
         RIGHT BREAST

Clinical Importance in Breast Cancer

1. Medial quadrant tumors are more likely to drain to internal mammary nodes and therefore have a higher risk of contralateral spread - they may be understaged if only the axilla is assessed.
2. Contralateral axillary node metastasis is classified as distant disease (M1) in the AJCC TNM staging system, not regional disease - Mulholland and Greenfield's Surgery 7e
3. After sentinel lymph node biopsy (SLNB) or axillary dissection, altered lymphatic drainage can redirect lymph to the contralateral axilla or internal mammary nodes as alternative routes - Current Surgical Therapy 14e
4. Radiocolloid mapping (99mTc sulfur microcolloid scintigraphy) used in sentinel node mapping can sometimes reveal unexpected drainage to the contralateral axilla, especially in medial or central breast tumors.
5. Internal mammary node involvement (via the cross-midline parasternal route) has important prognostic and radiotherapy planning implications - the internal mammary chain is included in regional nodal irradiation protocols for this reason.

Key Anatomical Points to Remember

• The subareolar (Sappey's) plexus is the central hub of all breast lymphatic drainage
• Medial breast drains preferentially to internal mammary nodes (main contralateral pathway)
• Lateral breast drains preferentially to axillary nodes
• The pre-sternal dermis contains lymphatics that freely communicate across the midline
• Parasternal nodes on both sides are connected by trans-sternal anastomoses
• Contralateral spread is a minor route under normal flow but becomes clinically relevant when primary routes are blocked (e.g., post-surgery, post-radiation, or by tumor obstruction)