The document summarizes bladder carcinoma and presents a case report of a 40-year old female patient. It describes that bladder cancers mainly arise from the urothelial lining, with urothelial carcinoma being the most common at 90%. Less common types include squamous cell carcinoma, adenocarcinoma, and non-urothelial carcinomas such as neuroendocrine carcinoma. The case report involves a transurethral resection of a bladder tumor specimen from a 40-year old female patient, which was sent for histopathological assessment to determine if it was urothelial carcinoma, small cell carcinoma, sarcomatoid urothelial carcinoma, or metastatic carcinoma.