A 23-DAY-OLD full-term, vaginally delivered boy weighing 3.2 kg at birth had abdominal distension and excessive weight gain. At age 23 days he weighed 4.6 kg and had cushingoid features, edema, hirsutism, and stria on the abdomen. Blood pressure was elevated (170/110 mm Hg). On examination a mass was palpable in the right hypochondriac and lumbar region. The liver was enlarged and firm. Ultrasonography revealed a well-defined mass in the right suprarenal region with a heterogeneous echotexture. Both kidneys were visualized and showed medullary calcinosis. Serum cortisol levels were normal. At autopsy a right suprarenal tumor measuring 6 × 4 × 3 cm and weighing 125 g was removed. Gross and microscopic appearances are shown in Figure 1, Figure 2, Figure 3, and Figure 4.