Microphallus: distinction between anomalous and endocrine types.

Operative treatment of microphallus has been proscribed in recent reports. It is not indicated for the more common endocrine type because of deficient gonadotropin, primary testicular disorder or end-organ defect. However, an operation may be quite necessary for the other form owing to defective morphogenesis--the anomalous type. Representative cases provide evidence that the method of treatment depends on the type of microphallus.