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Vulvar Cancer

By

Pedro T. Ramirez

, MD, The University of Texas MD Anderson Cancer Center;


Gloria Salvo

, MD, MD Anderson Cancer Center

Last full review/revision Sep 2020| Content last modified Sep 2020
Click here for the Professional Version
Topic Resources

Vulvar cancer, usually a skin cancer, develops in the area around the opening of the vagina.

  • The cancer may appear to be a lump, an itchy area, or a sore that does not heal.

  • A sample of the abnormal tissue is removed and examined (biopsied).

  • All or part of the vulva and any other affected areas are removed surgically.

  • Reconstructive surgery can help improve appearance and function.

In the United States, cancer of the vulva (vulvar carcinoma) is the fourth most common gynecologic cancer, accounting for 5% of these cancers. Vulvar cancer usually occurs after menopause. The average age at diagnosis is 70 years. As more women live longer, this cancer is likely to become more common. Recent evidence suggests that vulvar cancer is becoming more common among younger women.

Locating the Vulva

External Female Genital Organs

Most vulvar cancers are skin cancers that develop near or at the opening of the vagina. About 90% of vulvar cancers are squamous cell carcinomas Squamous Cell Carcinoma Squamous cell carcinoma is cancer that begins in the squamous cells of the skin. Thick, scaly growths appear on the skin and do not heal. To diagnose the cancer, doctors do a biopsy. Treatment... read more Squamous Cell Carcinoma , which develop in the flat cells that form the outermost layer of skin, and 5% are melanomas Melanoma Melanoma is a skin cancer that begins in the pigment-producing cells of the skin (melanocytes). Melanomas can begin on normal skin or in existing moles. They may be irregular, flat or raised... read more Melanoma , which develop in the pigment-producing cells of the skin (melanocytes). The remaining 5% include adenocarcinomas (which develop from gland cells), basal cell carcinomas Basal Cell Carcinoma Basal cell carcinoma, the most common skin cancer, originates in certain cells of the outer layer of the skin (epidermis). Usually, a small, shiny bump appears on the skin and enlarges slowly... read more Basal Cell Carcinoma (which rarely spread), and rare cancers such as Bartholin gland cancer. (Bartholin glands are very small, round glands located deep in the vulva on either side of the opening to the vagina.)

Vulvar cancer begins on the surface of the vulva. Most of these cancers grow slowly, remaining on the surface for years. However, some (for example, melanomas) grow quickly. Untreated, vulvar cancer can eventually invade the vagina, the urethra, or the anus and spread into lymph nodes in the pelvis and abdomen and into the bloodstream.

Risk Factors of Vulvar Cancer

The risk of developing vulvar cancer is increased by the following:

Symptoms of Vulvar Cancer

Redness or a change in skin color of the vulva may be precancerous (indicating that cancer is likely to eventually develop).

Vulvar cancer usually causes unusual lumps or flat, red, or flesh-colored sores that can be seen and felt and that do not heal. Sometimes the flat sores become scaly, discolored, or both. The surrounding tissue may contract and pucker. Melanomas may be bluish black or brown and raised. Some sores look like warts.

Many women have had itching in the vulvar area for a long time.

Typically, vulvar cancer causes little discomfort, but itching is common. Eventually, the lump or sore may bleed or produce a watery discharge (weep). These symptoms should be evaluated promptly by a doctor.

Diagnosis of Vulvar Cancer

  • Biopsy

Doctors diagnose vulvar cancer by taking a sample of the abnormal skin and examining it (biopsy). The biopsy enables doctors to determine whether the abnormal skin is cancerous or just infected or irritated. The type of cancer, if present, can also be identified, helping doctors develop a treatment plan. If the skin abnormalities are not well-defined, doctors apply stains to the abnormal area to help determine where to take a sample of tissue for a biopsy. Alternatively, they may use an instrument with a binocular magnifying lens (colposcope Colposcopy Sometimes doctors recommend screening tests, which are tests that are done to look for disorders in people who have no symptoms. If women have symptoms related to the reproductive system (gynecologic... read more Colposcopy ) to examine the surface of the vulva.

Staging of vulvar cancer

Doctors stage vulvar cancer based on how large it is, where it is, and whether it has spread to nearby lymph nodes, which is determined during surgery to remove the cancer. Stages range from I (the earliest) to IV (advanced).

  • Stage I: The cancer is confined to the vulva or perineum (the area between the opening of the vagina and the anus).

  • Stage II: The cancer has spread to nearby tissues (the lower part of the urethra and/or vagina or to the anus) but not to the lymph nodes.

  • Stage III: The cancer has reached the lymph nodes, with or without spread to nearby tissues.

  • Stage IV: The cancer has spread further—for example, to the bladder, the upper part of the vagina or urethra, the rectum, more distant lymph nodes, or outside the pelvis.

Prognosis of Vulvar Cancer

If vulvar cancer is detected and treated early, about 3 of 4 women have no sign of cancer 5 years after diagnosis. The percentage of women who are alive 5 years after diagnosis and treatment (5-year survival rate) depends on whether and how far the cancer has spread:

  • Stage I: More than 90%

  • Stage II: 80%

  • Stage III: 50 to 60%

  • Stage IV: Only about 15%

Melanomas are more likely to spread than squamous cell carcinomas.

Treatment of Vulvar Cancer

  • Removal of all or part of the vulva

  • Usually removal of nearby lymph nodes

  • For more advanced cancers, surgery and radiation therapy, often with chemotherapy

All or part of the vulva is surgically removed (a procedure called vulvectomy). Nearby lymph nodes are usually also removed. But sometimes doctors can instead do a sentinel lymph node What Is a Sentinel Lymph Node? Breast cancer occurs when cells in the breast become abnormal and divide uncontrollably. Breast cancer usually starts in the glands that produce milk (lobules) or the tubes (ducts) that carry... read more What Is a Sentinel Lymph Node? dissection (removal of the first lymph node that would be affected by the cancer). Because basal cell carcinoma of the vulva does not tend to spread (metastasize) to distant sites, surgery usually involves removing only the cancer. The whole vulva is removed only if basal cell carcinoma is extensive.

To identify sentinel lymph nodes, doctors inject a blue or green dye and/or a radioactive substance into the vulva around the tumor. These substances map the pathway from the vulva to the first lymph node (or nodes) in the pelvis. During surgery, doctors then check for lymph nodes that look blue or green or that give off a radioactive signal (detected by a handheld device). Doctors remove this lymph node and send it to a laboratory to be checked for cancer. If it is cancer-free, no other lymph nodes need to be removed (unless they look abnormal). For early-stage cancers, such treatment is usually all that is needed. Doctors may remove a sentinel lymph nodes on one or both sides of the vulva, depending on the size of the tumor.

For more advanced vulvar cancers, radiation therapy, often with chemotherapy (with cisplatin or fluorouracil), are usually used before vulvectomy. Such treatment can shrink very large cancers, making them easier to remove. Sometimes the clitoris and other organs in the pelvis must be removed.

For very advanced vulvar cancers, treatment may include surgery to remove all pelvic organs (called pelvic exenteration), radiation therapy, and/or chemotherapy. These organs include the reproductive organs (vagina, uterus, fallopian tubes, and ovaries), bladder, urethra, rectum, and anus. Which organs are removed and whether all are removed depends on many factors, such as the cancer's location, the woman's anatomy, and her goals after surgery. Permanent openings—for urine (urostomy) and for stool (colostomy Understanding Colostomy Family history and some dietary factors (low fiber, high fat) increase a person’s risk of colorectal cancer. Typical symptoms include bleeding during a bowel movement, fatigue, and weakness... read more Understanding Colostomy )—are made in the abdomen so that these waste products can leave the body and be collected in bags.

After the cancer is removed, surgery to reconstruct the vulva and other affected areas (such as the vagina) may be done. Such surgery can improve function and appearance.

Doctors work closely with the woman to develop a treatment plan that is best suited to her and takes into account her age, sexual lifestyle, and any other medical problems. Sexual intercourse is usually possible after vulvectomy.

More Information

The following is an English-language resource that may be useful. Please note that THE MANUAL is not responsible for the content of this resource.

  • National Cancer Institute: Vulvar Cancer: This web site provides links to general information about vulvar cancer, as well as links to information about causes, statistics, prevention, screening, treatment, and research and about coping with cancer.

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