A 45-year-old man with a 10-year history of varicose veins in the left lower limb presents with sudden onset of pain, swelling, and erythema over the medial calf. On examination, a tender, palpable cord is felt along the greater saphenous vein. Duplex ultrasound confirms thrombosis of the greater saphenous vein with no involvement of the deep venous system. What is the most appropriate next step in management?

Explanation

## Superficial Thrombophlebitis Management This patient has **superficial thrombophlebitis (STP)** of the greater saphenous vein—a thrombotic inflammation of a superficial vein, distinct from deep vein thrombosis (DVT). ### Key Distinctions: - **STP** = inflammation + thrombosis of superficial veins (GSV, SSV) - **DVT** = thrombosis of deep veins (popliteal, femoral, iliac) - Duplex confirms **no deep venous involvement** → this is isolated STP ### Management of Isolated STP (No DVT): **Conservative management is standard:** - **Compression therapy** (class II–III stockings or bandaging) - **Leg elevation** to reduce swelling - **NSAIDs** (indomethacin 75 mg/day or ibuprofen) for pain and inflammation - **Early mobilization** to prevent stasis - **Anticoagulation is NOT routinely indicated** for isolated STP without DVT extension ### When Anticoagulation IS Considered: - STP **within 3 cm of the saphenofemoral junction** (risk of proximal extension to femoral vein) - **Concurrent DVT** (present in this case: NO) - **Malignancy-associated thrombophlebitis** (Trousseau syndrome) ### Why NOT Anticoagulation Here? - No DVT present - Greater saphenous vein involvement is distal from saphenofemoral junction - Risk of proximal extension is low with compression alone - ACCP guidelines (2016) recommend against routine anticoagulation for distal STP **High-Yield:** Superficial thrombophlebitis ≠ DVT. Isolated STP responds well to conservative measures; anticoagulation reserved for high-risk anatomy or DVT coexistence.