Co‑occurrence of clear cell renal cell carcinoma and bladder urothelial carcinoma: A case report and literature review.

The co-occurrence of clear cell renal cell carcinoma (ccRCC) and bladder urothelial carcinoma (bUC) is rare, and owing to the lack of a unified treatment plan, the prognosis is poor. The present report describes the case of a 65-year-old male patient with a history of smoking and no history of malignant tumors who presented with hematuria at the Huanghe Sanmenxia Hospital Affiliated to Henan University of Science and Technology (Sanmenxia, China) in July 2021. Urinary system computed tomography urography revealed a right renal tumor, and cystoscopy revealed intravesical lesions.

Clinical evolution of bladder carcinosarcoma: A case report and literature review.

Rationale: Bladder carcinosarcoma (BC) is a malignant tumor composed of a mixture of malignant epithelial and stromal components. Carcinosarcoma mostly occurs in the upper respiratory tract and upper gastrointestinal tract and is less common in the urinary system. The incidence of malignant tumors of the urinary system is <3%.