Types/bladder/patient/bladder-screening-pdq
Contents
Bladder and Other Urothelial Cancers Screening (PDQ®)–Patient Version
What is screening?
Screening is looking for cancer before a person has any symptoms. This can help find cancer at an early stage. When abnormal tissue or cancer is found early, it may be easier to treat. By the time symptoms appear, cancer may have begun to spread.
Scientists are trying to better understand which people are more likely to get certain types of cancer. They also study the things we do and the things around us to see if they cause cancer. This information helps doctors recommend who should be screened for cancer, which screening tests should be used, and how often the tests should be done.
It is important to remember that your doctor does not necessarily think you have cancer if he or she suggests a screening test. Screening tests are given when you have no cancer symptoms.
If a screening test result is abnormal, you may need to have more tests done to find out if you have cancer. These are called diagnostic tests.
General Information About Bladder and Other Urothelial Cancers
KEY POINTS
- Bladder and other urothelial cancers are diseases in which malignant (cancer) cells form in the urothelium.
- Bladder cancer is more common in men than women.
- Smoking can affect the risk of bladder cancer.
Bladder and other urothelial cancers are diseases in which malignant (cancer) cells form in the urothelium.
The bladder is a hollow organ in the lower part of the abdomen. It is shaped like a small balloon and has a muscle wall that allows it to get larger or smaller to store urine made by the kidneys. There are two kidneys, one on each side of the backbone, above the waist. Tiny tubules in the kidneys filter and clean the blood. They take out waste products and make urine. The urine passes from each kidney through a long tube called a ureter into the bladder. The bladder holds the urine until it passes through the urethra and leaves the body.
The urothelium is a layer of tissue that lines the urethra, bladder, ureters, prostate, and renal pelvis. Cancer that begins in the urothelium of the bladder is much more common than cancer that begins in the urothelium of the urethra, ureters, prostate, or renal pelvis. Because it is the most common form of urothelial cancer, bladder cancer is the focus of this summary.
Anatomy of the male urinary system (left panel) and female urinary system (right panel) showing the kidneys, ureters, bladder, and urethra. Urine is made in the renal tubules and collects in the renal pelvis of each kidney. The urine flows from the kidneys through the ureters to the bladder. The urine is stored in the bladder until it leaves the body through the urethra.
There are 3 types of cancer that begin in the urothelial cells of the bladder. These cancers are named for the type of cells that become malignant (cancerous):
- Transitional cell carcinoma: Cancer that begins in cells in the innermost layer of the bladder urothelium. These cells are able to stretch when the bladder is full and shrink when it is emptied. Most bladder cancers begin in the transitional cells.
- Squamous cell carcinoma: Cancer that forms in squamous cells (thin, flat cells that line the bladder). Cancer may form after long-term infection or irritation.
Adenocarcinoma: Cancer that begins in glandular cells. Glandular cells in the bladder urothelium make substances such as mucus.
See the following PDQ summaries for more information about bladder and other urothelial cancers:
- Bladder Cancer Treatment
- Transitional Cell Cancer of the Renal Pelvis and Ureter Treatment
Bladder cancer is more common in men than women.
In the United States, bladder cancer occurs more often in men than in women, and more often in whites than in blacks. From 2006 to 2015, bladder cancer rates decreased slightly each year. The number of deaths from bladder cancer decreased for men and women of all races from 1975 to 2009. From 2007 to 2016, deaths from bladder cancer stayed the same for men and decreased slightly each year for women.
Smoking can affect the risk of bladder cancer.
Anything that increases your chance of getting a disease is called a risk factor. Having a risk factor does not mean that you will get cancer; not having risk factors doesn't mean that you will not get cancer. Talk to your doctor if you think you may be at risk for bladder cancer.
Risk factors for bladder cancer include the following:
- Using tobacco, especially smoking cigarettes.
- Having a family history of bladder cancer.
- Having certain changes in the genes that are linked to bladder cancer.
- Being exposed to paints, dyes, metals, or petroleum products in the workplace.
- Past treatment with radiation therapy to the pelvis or with certain anticancer drugs, such as cyclophosphamide or ifosfamide.
- Taking Aristolochia fangchi, a Chinese herb.
- Drinking water from a well that has high levels of arsenic.
- Drinking water that has been treated with chlorine.
- Having a history of bladder infections, including bladder infections caused by Schistosoma haematobium.
- Using urinary catheters for a long time.
Older age is a risk factor for most cancers. The chance of getting cancer increases as you get older.
Screening for Bladder and Other Urothelial Cancers
KEY POINTS
- Tests are used to screen for different types of cancer when a person does not have symptoms.
- There is no standard or routine screening test for bladder cancer.
- Hematuria tests have been studied as a way to screen for bladder cancer.
- Two tests may be used to screen for bladder cancer in patients who have had bladder cancer in the past:
- Cystoscopy
- Urine cytology
- Screening tests for bladder and other urothelial cancers are being studied in clinical trials.
Tests are used to screen for different types of cancer when a person does not have symptoms.
Scientists study screening tests to find those with the fewest harms and most benefits. Cancer screening trials also are meant to show whether early detection (finding cancer before it causes symptoms) helps a person live longer or decreases a person's chance of dying from the disease. For some types of cancer, the chance of recovery is better if the disease is found and treated at an early stage.
There is no standard or routine screening test for bladder cancer.
Hematuria tests have been studied as a way to screen for bladder cancer.
Hematuria (red blood cells in the urine) may be caused by cancer or by other conditions. A hematuria test is used to check for blood in a sample of urine by viewing it under a microscope or using a special test strip. The test may be repeated over time.
Two tests may be used to screen for bladder cancer in patients who have had bladder cancer in the past:
Cystoscopy
Cystoscopy is a procedure to look inside the bladder and urethra to check for abnormal areas. A cystoscope (a thin, lighted tube) is inserted through the urethra into the bladder. Tissue samples may be taken for biopsy.
