[A case of infantile virilizing adrenocortical tumor].

The patient was a 16-month-old girl, born by mature natural delivery and weighing 3,320 g. Hirsutism was noted on birth. Development of pubic hair and hypertrophy of the labia minora were noted after 8 months. At the time of admission, the height was 80 cm and body weight 14.5 kg. Systemic obesity, facial acne, systemic hirsutism, low pitched voice and hypertrophied clitoris were observed. Androstenedione, dehydroepiandrosterone-sulfate and cortisol showed high levels in the blood, and the urinary 17-KS was obviously high, along with an increase in urinary 17-OHCS. The subject did not respond to either the dexamethasone inhibition test or ACTH load test. The abdominal CT revealed a tumor in the front upper position of the left kidney, and adrenal scintigraphy disclosed an obvious accumulation image in the adrenal gland on the left side. Based on the diagnosis of a left adrenal tumor, left adrenalectomy was performed. The tumor measured 5.0 x 4.5 x 3.7 cm, and weighed 57 g. Histopathologically it was diagnosed as adrenocortical adenoma. The infantile virilizing adrenocortical tumor is reported together with some discussion of the literature.