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Fig. 14A. —44-year-old man who had bilateral lower extremity edema below the waist for 1 year without history of surgery or trauma. Abdominal and pelvic lymphadenopathy identified on CT was biopsied and was negative for malignancy. Cause of findings is unknown. Early anterior lymphoscintigrams of calves (A) and knees (B) show fine lymphatic collaterals (arrows), especially in left leg. R = right side, L = left side.