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Words to know: Bladder cancer

Urothelium
The lining of the bladder, ureters, kidney pelvis, and urethra.
Urothelial carcinoma
Cancer that starts in the urothelium. It is the most common type of bladder cancer.
Cystoscopy
A test that uses a thin camera to look inside the bladder.
TURBT
Transurethral resection of bladder tumor. Surgery to remove a bladder tumor through the urethra.
Intravesical
Inside the bladder. Intravesical therapy is medicine put directly into the bladder.
BCG
Bacillus Calmette-Guerin. A weakened germ put into the bladder to help the immune system attack cancer.
Carcinoma in situ (CIS)
Flat, high-grade cancer cells that have not grown deeper than the lining.
Muscle-invasive
Cancer that has grown into the muscle layer of the bladder wall.
Grade
How abnormal the cancer cells look. High-grade cancers tend to grow faster.
Radical cystectomy
Surgery to remove the whole bladder, nearby lymph nodes, and sometimes nearby organs.
Urinary diversion
A new path for urine to leave the body after the bladder is removed.
Urostomy
A small opening on the belly where urine drains into a bag.
Neobladder
A new bladder made from a piece of bowel and connected to the urethra.
Trimodality therapy
Bladder-sparing treatment using TURBT, radiation, and chemotherapy together.
Ureter
The tube that carries urine from each kidney to the bladder.
Urethra
The tube that carries urine from the bladder out of the body.
Neoadjuvant therapy
Treatment given before surgery to shrink the cancer.
Adjuvant therapy
Treatment given after surgery to lower the chance the cancer comes back.
Perioperative therapy
Treatment given both before and after surgery.
Cisplatin
A strong chemotherapy medicine. It can affect the kidneys, hearing, and nerves, so not everyone can get it.
Immunotherapy
Treatment that helps your immune system fight cancer.
Antibody-drug conjugate
A medicine that links an antibody to chemotherapy, to deliver it straight to cancer cells.
Targeted therapy
Medicine that blocks a specific gene change or protein in cancer cells.
Metastatic
Cancer that has spread from where it started to other parts of the body.
Lynch syndrome
An inherited condition that raises the risk of some cancers, including upper tract urothelial cancer.

Last updated: 2026-10-27. Medically reviewed by Veli Bakalov, MD, medical oncologist (October 2026). General education from Step by Step, the patient portal of HemeOncBuddy.