A member asked:

Likely that severe hypogonadotropic hypogonadism has other causes than just prolactinoma if cabergoline fails to normalize testosterone levels?

A doctor has provided 1 answer
Dr. Quang Nguyen answered

Specializes in Endocrinology

Yes: If a pituitary growth is big (2 cm) , and the initial prolactin wasn't very high, then the growth is most likely not a prolacatinoma. This non-functioning growth can "take up normal space" in the pituitary and physically suppress the hormones that control testosterone production and release. How big is your tumor and what was the original prolactin level?

Answered 9/16/2013

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