gonadotropin patterns before and after stimulation with gonadotropin-releasing hormone ( gnrh ) have been studied in 69 hypogonadic men of various types : patients with expansive hypothalamus -- pituitary disorders before and after surgery , patients with hypogonadotropic hypogonadism , and patients with oligozoospermia or azoospermia who have primary partial or total testicular deficiency .
C0023610
gonadotropin-releasing
C0020663
hypothalamus