In the presence of unilateral lymphedema, the contralateral limb is often also abnormal. On lymphoscintigraphy, therefore, care should be taken before diagnosing unilateral lymphatic dysfunction. Quantification should be included in routine lymphoscintigraphy, as reduced ilioinguinal nodal accumulation may be the only apparent abnormality.
Popliteal node visualization after subcutaneous foot web space injection is an important sign of abnormal lymphatic function in patients with clinical lymphedema of the lower extremities.
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