This paper reports 3 cases of congenital GH deficiency with male pseudohermaphroditism. All 3 showed a normal male karyotype, hypospadias of different degrees, and, for 2 of them, micropenis. No müllerian structure was individualized since pelvic ultrasound and genitography were normal. Patient 1 was born with multiple anomalies and patient 3 showed partial agenesia of the corpus callosum. Only 1 patient showed complete anterior pituitary deficiency. Gonadotropin defects were not investigated. We postulate that GH might play a role in early testosterone stimulation, and thus in male sexual differentiation.

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