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Updated: Jul 11, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Pituitary adenoma with tumoral granulomatous reaction
Bernd W Scheithauer1, Ana Isabel Silva, John L D Atkinson
1Department of Pathology and Laboratory Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA. scheithauer.bernd@mayo.edu
Abstract:
Herein, we report a unique case of an adult male with a corticotrophic pituitary adenoma of silent subtype 1 exhibiting conspicuous idiopathic tumoral noncaseating granulomatous inflammation. The lesion was unassociated with clinical or laboratory evidence of either systemic sarcoidosis or infection. Histochemical and polymerase chain reaction (PCR) studies revealed neither fungi nor tubercle bacilli. We suggest that tumoral production of an as yet uncharacterized antigen may have induced the granulomatous inflammatory reaction.
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