Which histologic findings are characteristic of pituitary apoplexy?

Updated: Apr 19, 2019
  • Author: Michael S Vaphiades, DO; Chief Editor: Edsel Ing, MD, MPH, FRCSC  more...
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Histologically, many of these tumors display hemorrhagic necrosis in their substance. This has been postulated to result from unrecognized episodes of focal hemorrhage. Bills reviewed histories of 37 patients with symptomatic pituitary apoplexy. [36] By immunostaining criteria, null-cell adenomas were the most frequent tumor type found.

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