To better understand transitional cell carcinoma, it helps to understand the anatomy of the bladder and genitourinary system.

The bladder is part of the lower urinary system. In an adult, the bladder can hold 10 to 20 ounces of urine: about as much liquid as in one can of soda. When the bladder is about half full, a person may begin to feel the need to empty it by urinating. Urine is carried out of the body through the urethra, a tube at the bottom of the bladder.

Anatomy examples:

• Genitourinary system
• Bladder and lower urinary tract in women
• Bladder and lower urinary tract in men [