Testicular cancer is cancer that starts in the testicles, the male reproductive glands located in the scrotum.
Alternative NamesCancer - testes; Germ cell tumor; Seminoma testicular cancer; Nonseminoma testicular cancer
Causes, incidence, and risk factorsThe exact cause of testicular cancer is unknown. There is no link between vasectomy and testicular cancer. Factors that may increase a man's risk for testicular cancer include:
Other possible causes include exposure to certain chemicals and HIV infection. A family history of testicular cancer may also increase risk.
Testicular cancer is the most common form of cancer in men between the ages of 15 and 35. It can occur in older men, and rarely, in younger boys.
White men are more likely than African-American and Asian-American men to develop this type of cancer.
There are two main types of testicular cancer: seminomas and nonseminomas. These cancers grow from germ cells, the cells that make sperm.
Seminoma: This is a slow-growing form of testicular cancer usually found in men in their 30s and 40s. The cancer is usually just in the testes, but it can spread to the lymph nodes. Seminomas are very sensitive to radiation therapy.
Nonseminoma: This more common type of testicular cancer tends to grow more quickly than seminomas. Nonseminoma tumors are often made up of more than one type of cell, and are identified according to these different cell types:
A stromal tumor is a rare type of testicular tumor. They are usually not cancerous. The two main types of stromal tumors are Leydig cell tumorsand Sertoli cell tumors. Stromal tumors usually occur during childhood.
SymptomsThere may be no symptoms. Symptoms that may occur can include:
Symptoms in other parts of the body, such as the lungs, abdomen, pelvis, back, or brain, may also occur if the cancer has spread.
Signs and testsA physical examination typically reveals a firm lump (mass) in one of the testicles. When the health care provider holds a flashlight up to the scrotum, the light does not pass through the lump.
Other tests include:
A biopsy of the tissue is usually done after the entire testicle is surgically removed.
TreatmentTreatment depends on the:
Once cancer is found, the first step is to determine the type of cancer cell by examining it under a microscope. The cells can be seminoma, nonseminoma, or both.
The next step is to determine how far the cancer has spread to other parts of the body. This is called "staging."
Three types of treatment can be used.
Joining a support group where members share common experiences and problems can often help the stress of illness. Your local branch of the American Cancer Society may have a support group. See: www.cancer.org for more information.
Lance Armstrong, a famous cyclist, is a Survivor of testicular cancer. His web site -- www.laf.org -- offers support and information for patients with testicular cancer.
The National Cancer Institute website also provides further information: www.cancer.gov
Expectations (prognosis)Testicular cancer is one of the most treatable and curable cancers.
The survival rate for men with early-stage seminoma (the least aggressive type of testicular cancer) is greater than 95%. The disease-free survival rate for Stage II and III cancers is slightly lower, depending on the size of the tumor and when treatment is begun.
ComplicationsTesticular cancer may spread to other parts of the body. The most common sites include the:
Complications of surgery can include:
If you are of childbearing age, ask your doctor about methods to save your sperm for use at a later date.
Calling your health care providerCall your health care provider if you have symptoms of testicular cancer.
PreventionThe United States Preventive Services Tast Force recommends against routine screening for testicular cancer because there is no known effective screening technique.
A testicular self-examination (TSE) performed on a monthly basis, however, may help detect such cancer at an early stage before it spreads. Finding it early is important to successful treatment and survival. Young men are sometimes taught how to perform self-exams shortly after puberty.
ReferencesEinhorn LH. Testicular cancer. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 210.
National Cancer Institute. Testicular cancer treatment PDQ. Updated Jan. 15, 2009.
Richie JP, Steele GS. Neoplasms of the testis. In: Wein AJ, ed. Campbell-Walsh Urology. 9th ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 29.
Screening for testicular cancer: update of the evidence for the U.S. Preventive Services Task Force. Agency for Healthcare Research and Quality. 2004. Accessed March 29, 2009.
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The most common symptom of testicular cancer is a painless lump or swelling in the testicle.
The adjective for "testis" is "testicular." This term is used to describe anything related to the testes, such as testicular cancer or testicular function.
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