DDx ⬇
- Deep vein thrombosis
- Venous insufficiency
- Baker’s cyst (rupture or obstruction of popliteal vein)
- Cellulitis
- Trauma
- Lymphatic obstruction, eg, obstruction by pelvic tumor
- Reflex sympathetic dystrophy
- Tumor or fibrosis obstructing iliac vein
- May-Thurner syndrome (left iliac vein compressed by right common iliac artery)
- Loiasis (Loa loa infection)
Related DDx ⬆