Bladder cancer is a common type of cancer that begins in the cells of the bladder. The bladder is a hollow muscular organ in your lower abdomen that stores urine.

Bladder cancer most often begins in the cells (urothelial cells) that line the inside of your bladder. Urothelial cells are also found in your kidneys and the tubes (ureters) that connect the kidneys to the bladder. Urothelial cancer can happen in the kidneys and ureters, too, but it’s much more common in the bladder.

Most bladder cancers are diagnosed at an early stage, when the cancer is highly treatable. But even early-stage bladder cancers can come back after successful treatment like many other cancers. For this reason, people with bladder cancer typically need follow-up tests for years after treatment to look for bladder cancer that recurs.

Signs and symptoms of Bladder Cancer may include the following:

• Blood in urine (hematuria), which may cause urine to appear bright red or cola colored, though sometimes the urine appears normal and blood is detected on a lab test
• Frequent urination
• Painful urination
• Back pain

Bladder cancer begins when cells in the bladder develop changes (mutations) in their DNA. A cell’s DNA contains instructions that tell the cell what to do. The changes tell the cell to multiply rapidly and to go on living when healthy cells would die. The abnormal cells form a tumor that can invade and destroy normal body tissue. In time, the abnormal cells can break away and spread (metastasize) through the body.

How common is Bladder cancer:

Urinary Bladder Cancer is the sixth most common type of cancer in the United States. In 2024, approximately 83,190 people will receive a diagnosis of bladder cancer, and some 16,840 people are expected to die from it, according to estimates by the Surveillance, Epidemiology, and End Results Program (SEER) of the National Cancer Institute (NCI).

Bladder cancer is most likely to affect white men. In fact, the incidence rate of bladder cancer is four times higher among men than among women. It is also twice as high in white males as among Black, Hispanic or Asian/Pacific Islander men.

The NCI explains that there are three major types of bladder cancer. The name of each type of cancer indicates the kind of cells that become malignant.

• Transitional cell carcinoma begins in cells in the innermost tissue layer of the bladder.
• Squamous cell carcinoma begins in the squamous cells. This type may form after long-term infection or irritation.
• Adenocarcinoma begins in glandular (secretory) cells in the lining of the bladder.

Cancer in the lining of the bladder is called superficial bladder cancer. Cancer that has spread through the lining of the bladder and has invaded the muscle wall of the organ, or has spread to nearby organs and lymph nodes, is called invasive bladder cancer.

Survival Rate:

Approximately 78 percent of people diagnosed with bladder cancer survived five years or more after diagnosis between 2012 and 2019, according to federal estimates.

Types of bladder cancer:

Different types of cells in your bladder can become cancerous. The type of bladder cell where cancer begins determines the type of bladder cancer. Doctors use this information to determine which treatments may work best for you.

Types of bladder cancer include:

• Urothelial carcinoma. Urothelial carcinoma, previously called transitional cell carcinoma, occurs in the cells that line the inside of the bladder. Urothelial cells expand when your bladder is full and contract when your bladder is empty. These same cells line the inside of the ureters and the urethra, and cancers can form in those places as well. Urothelial carcinoma is the most common type of bladder cancer in the United States.
• Squamous cell carcinoma. Squamous cell carcinoma is associated with chronic irritation of the bladder — for instance, from an infection or from long-term use of a urinary catheter. Squamous cell bladder cancer is rare in the United States. It’s more common in parts of the world where a certain parasitic infection (schistosomiasis) is a common cause of bladder infections.
• Adenocarcinoma. Adenocarcinoma begins in cells that make up mucus-secreting glands in the bladder. Adenocarcinoma of the bladder is very rare.

Some bladder cancers include more than one type of cell.

Risk factors:

Factors that may increase bladder cancer risk include:

• Smoking. Smoking cigarettes, cigars or pipes may increase the risk of bladder cancer by causing harmful chemicals to accumulate in the urine. When you smoke, your body processes the chemicals in the smoke and excretes some of them in your urine. These harmful chemicals may damage the lining of your bladder, which can increase your risk of cancer.
• Increasing age. Bladder cancer risk increases as you age. Though it can occur at any age, most people diagnosed with bladder cancer are older than 55.
• Being male. Men are more likely to develop bladder cancer than women are.
• Exposure to certain chemicals. Your kidneys play a key role in filtering harmful chemicals from your bloodstream and moving them into your bladder. Because of this, it’s thought that being around certain chemicals may increase the risk of bladder cancer. Chemicals linked to bladder cancer risk include arsenic and chemicals used in the manufacture of dyes, rubber, leather, textiles and paint products.
• Previous cancer treatment. Treatment with the anti-cancer drug cyclophosphamide increases the risk of bladder cancer. People who received radiation treatments aimed at the pelvis for a previous cancer have a higher risk of developing bladder cancer.
• Chronic bladder inflammation. Chronic or repeated urinary infections or inflammations (cystitis), such as might happen with long-term use of a urinary catheter, may increase the risk of a squamous cell bladder cancer. In some areas of the world, squamous cell carcinoma is linked to chronic bladder inflammation caused by the parasitic infection known as schistosomiasis.
• Personal or family history of cancer. If you’ve had bladder cancer, you’re more likely to get it again. If one of your blood relatives — a parent, sibling or child — has a history of bladder cancer, you may have an increased risk of the disease, although it’s rare for bladder cancer to run in families. A family history of Lynch syndrome, also known as hereditary nonpolyposis colorectal cancer (HNPCC), can increase the risk of cancer in the urinary system, as well as in the colon, uterus, ovaries and other organs.