PMC3852514_01
Tumor of the right anterolateral wall of the urinary bladder
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Abdominal ultrasonography revealed a tumor of the right anterolateral wall of the urinary bladder that was confirmed by computing tomography (CT) scan (Figure 1).
Aggregation of monomorphous population of large lymphoid tumor cells (hematoxylin-eosin, x 40)
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Transurethral resection was performed and histology revealed a diffuse, dense infiltration of highly pleomorphic population of large cells (Figure 2).
Immunohistochemical staining shows a positive reaction for CD20 (Avidine-biotine, x 40)
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Tumors cells were strongly positive for CD79a, CD20 (Figure 3) and bcl2 protein.