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Pathology Quiz Case - 51

 Dr Sampurna Roy MD

 

                                                                                                   

 

Clinical History: A 25 year old male presented with abdominal pain.

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 .

        

 

 Diagnosis:

 

Dart


 

 

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