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Urothelial Carcinoma - Small Cell Type

slide 49 of 63

Comments:
Small cell carcinoma of the urinary bladder is morphologically identical to that seen in the lung. About 50% of cases are pure small cell carcinoma, the remainder show urothelial, squamous, or adenocarcinoma component. This case shows urothelial carcinoma-in-situ overlying the tumor.

slide 49 of 63