A patient is seen for increasing edema in his left lower extremity, erythema, an

2. deep vein thrombosis


Those are all signs/symptoms of DVT, the others are not.

2 -- The manifestations of deep vein thrombosis (DVT) are primarily due to the inflammatory process that accompanies the thrombus. Calf pain is the most common symptom, and it may be described as tightness or a dull, aching pain in the affected extremity, particularly upon walking. Tenderness, swelling, warmth, and erythema may be noted along the course of involved veins. The affected extremity may be cyanotic and often is edematous. Rarely, a cord may be palpated over the affected vein. A positive Homan’s sign is an unreliable indicator of DVT. A DVT is not an arterial or a primary superficial vein problem. Varicose veins are tortuous veins with valve insufficiency.