Canadian Association of Pathologists - Case of the Month, December 2006
23 year-old man with acute appendicitis.

Contributed by Denis Bailey, MD, FRCPC; University Health Network, Toronto, Ontario (denis.bailey@uhn.on.ca).
Virtual microscopy cases hosted by Objective Pathology Services, Toronto, Ontario.

A previously healthy 23 year-old man presented with acute appendicitis, and underwent an emergency appendectomy.

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Initial specimen:

H&E of appendectomy specimen

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Lysozyme
CD45
CD34
Myeloperoxidase
CD117
Gomori's Methenamine Silver (GMS)

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Diagnosis

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