“Bladder cancer is categorized by a number of types, depending on where exactly it forms, along with other factors. The most common type of bladder cancer is transitional cell (urothelial) carcinoma (TCC). This type accounts for about 95 percent of bladder cancers. Cancer cells of this type look like the urothelial cells lining the inside of the bladder.”

The City of Hope (Types of Bladder Cancer: Common, Rare and More)