Sertoli Cell-Only Syndrome

**Definition:** A type of male infertility in which no germ cells are visible in any of the biopsied SEMINIFEROUS TUBULES (type I) or in which germ cells are present in a minority of tubules (type II). Clinical features include AZOOSPERMIA, normal VIRILIZATION, and normal chromosomal complement.

**Tree numbers:** - C12.100.500.430.754 - C12.100.750.700.754 - C12.200.294.430.754

**Synonyms:** - Germinal Cell Aplasia - Del Castillo Syndrome