Sertoli cell-only syndrome

n.
  1. Congenital absence of germinal epithelium from the seminiferous tubules, which contain only Sertoli cells, resulting in sterility due to the absence of living sperm cells in the semen.Del Castillo syndrome
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.