The most common histological type of urinary bladder cancer is urothelial carcinoma (UC). Clear cell adenocarcinoma (CCA) of the urinary bladder is a rare histologic subtype of adenocarcinoma in the urinary tract. The tumor primarily affects women and has histomorphological features resembling CCA of the female genital tract (or Müllerian origin). Clear cell adenocarcinoma consists of cells with abundant clear cytoplasm, arranged in solid, glandular, or tubulocystic patterns. Patients typically present with gross hematuria, dysuria, and discharge. In this study, we report a case of a 50-year-old male, presenting with gross hematuria, which was subsequently diagnosed with CCA at our pathology department. Furthermore, we provide a short systematic review of the literature for this rare histopathological entity and a brief discussion about its morphological and immunohistochemical (IHC) characteristics.
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