Leg swelling with circumference >3cm more than unaffected side
Tenderness over calf muscle
Homan's sign - pain during dorsiflexion of foot (SN 60-96% and SP 20-72%)
Deep venous thrombosis
Arterial thrombosis
Venous thromboembolism
Arteritis
Lymphangitis
Arthritis
Phlebitis
Buerger disease