Diagnostic approach to lower limb edema.

Patients with lower limb edema are frequently referred to vascular specialists for evaluation. Multiple etiologies must be considered and often more than one cause may be present. Notably, the role of lymphatic system regardless of the underlying pathology has been underestimated. A thorough history and physical examination and a carefully considered laboratory and imaging evaluation are critical in differentiating causes. In this opinion article, we propose a diagnostic algorithm that incorporates a systematic approach to the patient with leg swelling and provides an efficient pathway for the differential diagnosis for this problem.