Which leg finding indicates deep venous thrombosis risk requiring medical referral?

Which leg finding indicates deep venous thrombosis risk requiring medical referral?

• A. Calf tenderness
• B. Unilateral leg swelling with warmth, redness, or tenderness
• C. Bilateral leg swelling
• D. Foot numbness

Answer: (B)

Unilateral leg swelling with warmth, redness, or tenderness signals a possible deep venous thrombosis that needs medical referral. A clot in a deep vein typically affects one leg, causing obstruction to venous return and local inflammation, which manifests as swelling plus warmth and redness around the involved area and tenderness along the deep veins. This combination is a classic red flag because a DVT can dislodge and travel to the lungs, risking a potentially life-threatening pulmonary embolism, so urgent medical evaluation is required. Calf tenderness by itself can occur with muscle strain or contusion and isn’t as specific for a clot. Bilateral swelling is more likely due to systemic causes like heart failure, generalized edema, or inactivity, rather than a localized clot. Foot numbness points to a neurologic issue rather than vascular thrombosis. When the unilateral swelling with warmth and redness is present, that’s the scenario most strongly associated with DVT risk and warrants referral.

Unilateral leg swelling with warmth, redness, or tenderness signals a possible deep venous thrombosis that needs medical referral. A clot in a deep vein typically affects one leg, causing obstruction to venous return and local inflammation, which manifests as swelling plus warmth and redness around the involved area and tenderness along the deep veins. This combination is a classic red flag because a DVT can dislodge and travel to the lungs, risking a potentially life-threatening pulmonary embolism, so urgent medical evaluation is required.

Calf tenderness by itself can occur with muscle strain or contusion and isn’t as specific for a clot. Bilateral swelling is more likely due to systemic causes like heart failure, generalized edema, or inactivity, rather than a localized clot. Foot numbness points to a neurologic issue rather than vascular thrombosis. When the unilateral swelling with warmth and redness is present, that’s the scenario most strongly associated with DVT risk and warrants referral.