A tumor that forms in the tissues of the urinary bladder is known as bladder cancer. The bladder is a hollow muscular organ located in the pelvis that collects and stores urine. Based on the affected cell type, the following are the various classifications for bladder cancer:
- Transitional cell carcinomas is the most common cancer type. It originates in the cells that compose the inner lining of the bladder
- Squamous cell carcinoma is cancer that forms in the thin, flat cells of the bladder
- Adenocarcinoma is cancer that starts in cells that produce and secrete mucus and other fluids
- Small cell carcinoma is cancer that starts in nerve-like cells referred to as neuroendocrine cells
In India, bladder cancer is the most common urological cancer being the fifth most prevalent cancer among men.