History: A 25 year old male presented with
Barium enema x-ray and colonoscopy revealed large sessile polyps in the rectum.
These are Hematoxylin and eosin sections from the rectal polyp.
Immunohistochemistry: Lymphoid follicle (germinal centres) - CD20 (L26)- positive B-cells.
Interfollicular area - CD3 and CD45RO (UCHL1)-positive T-cells.
Germinal centres - B-cells are negative for BCL-2 .
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