Urothelial carcinoma: Urothelial carcinoma is also known as transitional cell carcinoma and is the most common type of bladder cancer. These cancers form in the urothelial cells, that form the innermost layer of the urinary bladder. The urothelial cells also line other parts of the urinary tract in the pelvic region, which connect the kidneys to the ureters, the ureters and the urethra. A patient, who has been diagnosed with urinary bladder cancer, may have synchronous tumours in the pelvis, ureters and urethra too, making it essential to check the entire urinary system and plan treatment approaches accordingly.
Squamous cell carcinoma: 1-2 % of bladder cancers are squamous cell carcinomas. Squamous cell carcinoma usually occurs following persistent irritation of the bladder's inner lining which can occur due to long-term urinary catheterization, bladder stone disease or schistosomal infection (Bilharziasis).