Which of the following conditions would most likely warrant a venous ultrasound?

Lower extremity swelling is a significant indicator that may warrant a venous ultrasound. This symptom can suggest the presence of various venous conditions, such as deep vein thrombosis (DVT), venous insufficiency, or superficial venous thrombosis. The ultrasound helps visualize blood flow in the veins and can detect blockages or abnormalities that could contribute to swelling.

In assessing patients, when swelling is noted in the lower extremities, medical professionals often need to determine if there are underlying venous pathologies, making a venous ultrasound a crucial diagnostic tool in such cases. This imaging test allows for the evaluation of blood clots and the competence of the venous valves, providing essential information for accurate diagnosis and treatment planning.

While the other conditions may warrant medical evaluation, they do not specifically relate to venous issues in the same direct manner, making them less likely to necessitate a venous ultrasound as a primary diagnostic tool.