Figure 1

Radiologic features of massive localized lymphedema. (a and b) AP radiographs of the right distal femur and medial distal thigh demonstrate a large region of pedunculated, mass-like soft tissue swelling. Multiple septa with areas of fat attenuation are evident. (c–e) MRI of the right femur and medial soft tissues demonstrates a massive lymphedematous medial soft tissue lesion. (c) Coronal T1 showing isointensity to muscle with intervening, expanded, fat-signal lobules. (d) Coronal STIR demonstrates extensive high signal edema throughout the mass. (e) Coronal T1-fat-saturated post-gadolinium. Heterogeneous enhancement after contrast administration can mimic the appearance of well-differentiated liposarcoma.