A two-year-old girl presented with clitoromegaly and an abdominal mass. Diagnostic procedures including sonography, computerized tomography, scintigraphy and measurement of catecholamines in urine excluded neuroblastoma, but suspected Wilms-tumor. Before completing the steroid measurements therapy was initiated according to Wilms-tumor (preoperative cytostatic therapy followed by surgical removal of the tumor). Morphology of the tumor, the serum and urinary steroid profile proved a benign adrenocortical adenoma producing mainly delta 5-steroids including the weak androgen, dehydroepiandrosterone.
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