Pituitary microadenoma

Case contributed by A.Prof Frank Gaillard

Presentation

Secondary amenorrhea and elevated prolactin (>1200)

Patient Data

Age: 18
Gender: Male
MRI

On the right side of the pituitary gland, inferiorly, abutting the floor of the fossa, is a 3 x 4 x 5 mm region of hypo enhancement, best seen on dynamic contrast enhanced sequences, consistent with a microadenoma. The pituitary is generally plumper, with an upwardly convex border, which is however common in this age group. No compression of the optic chiasm or optic nerves.

The remainder of the imaged brain (please note this study has been targeted to the pituitary, and as such the whole brain has not been imaged) appears unremarkable.

Case Discussion

When there is a known hormone producing lesion, a small microadenoma can be diagnosed with confidence. This is clearly abnormal and no equivocation is needed. 

The patient is undergoing medical therapy. 

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Case information

rID: 29627
Case created: 10th Jun 2014
Last edited: 28th Oct 2015
Inclusion in quiz mode: Included

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