Appendix
Benign tumors
Granular cell tumor


Topic Completed: 1 August 2012

Revised: 20 August 2019

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PubMed Search: Granular cell tumor appendix

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Cite this page: Mansouri J. Granular cell tumor. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/appendixGCT.html. Accessed December 8th, 2019.
Definition / general
  • Similar to granular cell tumors at other sites but uncommon in appendix
Case reports
Microscopic (histologic) description
  • Polygonal cells with granular cytoplasm and bland nuclei
Positive stains
  • S100, PAS
Differential diagnosis
  • Granular cell transformation of appendiceal smooth muscle: S100-
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