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Fig. 3. —34-year-old man with recurrent left foot and leg swelling and multiple episodes of left leg cellulitis. Anterior lymphoscintigram obtained 3 hr after injection of radionuclide reveals markedly delayed and diminished flow in left leg, with no lymphatic trunks or clinically relevant collaterals visualized. Note absence of radionuclide uptake in expected location of left ilioinguinal lymph nodes (thick arrow), compared with uptake on right side (thin arrow). Findings are consistent with aplasia of lymphatic vessels in left leg and primary lymphedema. LT = left side of body.