a tumour of the *interstitial (Leydig) cells of the testis. Such tumours often secrete testosterone, which in prepubertal boys causes *virilization and precocious puberty.... leydig tumour
n. the most extreme result of excessive androgen production (*hyperandrogenism) in women. It is characterized by temporal balding, a male body form, muscle bulk, deepening of the voice, enlargement of the clitoris, and *hirsutism. Virilization in prepubertal boys may be caused by some tumours (see Leydig tumour).... virilization
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