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Bladder cancer types

Every bladder cancer patient is different. The cancer experts at Cancer Treatment Centers of America (CTCA) have extensive experience in properly staging and diagnosing the disease, and developing a treatment plan that's tailored to your specific type of bladder cancer.

To understand bladder cancer, it can help to understand the anatomy of this region of the body. Urine is made by the kidneys and then transported to the bladder by tubes called ureters. In adults, the bladder can hold about two cups of urine, on average. During urination, fluid is pushed out of the bladder through the urethra. In women, the urethra is a fairly short tube; in men, the urethra is longer.

cancer types

Types of bladder cancer

We treat several types of bladder cancer, including:

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. There are two subtypes of TCC:

  • Papillary carcinoma: This type of TCC grows out from the inner surface of the bladder toward the hollow center in fingerlike projections. Often, these tumors are called “noninvasive papillary cancers,” meaning they don’t grow into the deeper layers of the bladder wall. When papillary TCC is very low grade, it may be called “papillary neoplasm” of low-malignant potential, and typically has a very good outcome.
  • Flat carcinomas: This type of TCC does not grow out of the urothelium toward the center of the bladder. Rather, flat carcinomas remain on the surface of the bladder wall. If a flat carcinoma is confined to the urothelium, it is called “noninvasive flat carcinoma” or “flat carcinoma in situ.”

Rarer forms of bladder cancer include:

  • Squamous cell carcinoma accounts for about 1 percent to 2 percent of bladder cancers diagnosed in the United States. Squamous cells look similar to the flat cells on the surface of the skin. Almost all squamous cell carcinomas of the bladder are invasive.
  • Adenocarcinoma of the bladder closely resembles the gland-forming cells seen in colon cancers, and accounts for about 1 percent of bladder cancers in the United States.
  • Small-cell carcinoma is extremely rare, accounting for fewer than 1 percent of all bladder cancers diagnosed in the United States. This type of bladder cancer begins in neuroendocrine cells, which are similar to nerves.
  • Sarcoma is another very rare type of bladder cancer that begins in the muscle layer of the bladder wall.

We're here to guide you through the cancer journey

We understand you may be feeling overwhelmed with questions and concerns about your type of cancer and what it all means. We're here to help guide you through the process.

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