Clinical and diagnostic aspects of lymphedema.

Lymphedema is a chronic, progressive, and common but often unrecognized condition. The diagnosis of lymphatic disease on clinical grounds alone remains a challenge. Without proper diagnosis, therapy is often delayed, allowing disease progression. There is a need for a practical diagnostic algorithm and its imaging technique to guide clinical decision-making. The aim of this topical review is to provide a practical approach for assessing patients with suspected lymphedema and to give a critical appraisal of currently available imaging modalities that are applied in clinical practice to diagnose and map lymphatic disease.