A member asked:

Can a prolactinoma develop on the posterior lobe of the pituitary or is a pituicytoma pressing on the stalk more likely as that also raises prolactin?

A doctor has provided 1 answer

Either: A very high prolactin level is going to be a prolactinoma, and prolactinomas are much more common that posterior pituitary lesions. I'd be surprised if any radiologist could swear up and down it arise too far back. The real question is, "Do we begin medical treatment for a presumed prolactinoma, or do we go in and biopsy because of the off-chance of a zebra?" Sounds like an easy call.

Answered 8/14/2018

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