Case 4
65 yo female. Tumor in the urinary bladder. Recent biopsies diagnosed as urothelial neoplasm, low malignant potential (LMP). Transurethral resection specimen.
Diffuse large B-cell lymphoma (centroblastic)
Note: Tumor cells are CD20 +, CD3 -, CD10+, bcl6+. There are reactive changes in the urothelium. Previous biopsies only contained urothelium, therefore the diagnosis of LMP.
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