Vulvar cancer forms in a woman's external genitalia, called the vulva. It occurs when cells in the vulva start to grow out of control. The vulva includes:
Vulvar cancer most often affects the outer vaginal lips. Less often, cancer affects the inner vaginal lips, clitoris, or vaginal glands.
Vulvar cancer usually forms slowly over many years. Abnormal cells can grow on the surface of the vulvar skin for a long time. This condition is called vulvar intraepithelial neoplasia (VIN). Because it is possible for VIN to become vulvar cancer, it is important to get treatment.
Anything that increases a person's chance of getting a disease is called a risk factor. Not every person with one or more of these risk factors will develop vulvar cancer, and it will develop in some people who don't have any known risk factors. Talk with your doctor if you think you may be at risk. Risk factors for vulvar cancer include:
Other possible risk factors include:
Vulvar cancer often does not cause early signs or symptoms. Signs and symptoms may be caused by vulvar cancer or by other conditions. Check with your doctor if you have any of the following:
In addition to asking about your personal and family health history and doing a physical exam, your doctor may perform the following tests and procedures:
The prognosis and treatment options depend on:
The process used to find out if cancer has spread within the vulva or to other parts of the body is called staging. The information gathered from the staging process determines the stage of the disease. It is important to know the stage in order to plan treatment. The following tests and procedures may be used in the staging process:
Cancer can spread through tissue, the lymph system, and the blood:
When cancer spreads to another part of the body, it is called metastasis. Cancer cells break away from where they began (the primary tumor) and travel through the lymph system or blood.
The metastatic tumor is the same type of cancer as the primary tumor. For example, if vulvar cancer spreads to the lung, the cancer cells in the lung are actually vulvar cancer cells. The disease is metastatic vulvar cancer, not lung cancer.
These abnormal cells are not cancer. Vulvar intraepithelial neoplasia (VIN) may become cancer and spread into nearby tissue. VIN is sometimes called stage 0 or carcinoma in situ.
The staging system below does not apply to melanoma of the vulva, which is staged like melanoma of the skin. For more information, see the Stage Information for Melanoma section in Melanoma Treatment.
In stage I, cancer has formed. The tumor is found only in the vulva. Stage I is divided into stages IA and IB.
In stage II, the tumor is any size and has spread to the lower one-third of the urethra, the lower one-third of the vagina, or the lower one-third of the anus. Cancer has not spread to the lymph nodes.
In stage III, the tumor is any size and has spread to the upper two-thirds of the urethra, the upper two-thirds of the vagina, the inner lining of the bladder or rectum, or to any number of lymph nodes. Stage III is divided into stages IIIA, IIIB, and IIIC.
In stage IV, the tumor is any size and has become attached to the bone, or cancer has spread to lymph nodes that are not movable or have become ulcerated, or there is distant spread. Stage IV is divided into stages IVA and IVB.
The cancer may come back in the vulva or in other parts of the body.
Different types of treatments are available for patients with vulvar cancer. Some treatments are standard (the currently used treatment), and some are being tested in clinical trials. A treatment clinical trial is a research study meant to help improve current treatments or obtain information on new treatments for patients with cancer. When clinical trials show that a new treatment is better than the standard treatment, the new treatment may become the standard treatment. Patients may want to think about taking part in a clinical trial. Some clinical trials are open only to patients who have not started treatment.
Surgery is the most common treatment for vulvar intraepithelial neoplasia (VIN) and vulvar cancer.
One of the following types of surgery may be done to treat VIN:
The goal of surgery for vulvar cancer is to remove all the cancer without any loss of the woman's sexual function. One of the following types of surgery may be done to treat vulvar cancer:
After the doctor removes all the cancer that can be seen at the time of the surgery, some patients may be given chemotherapy and/or radiation therapy after surgery to kill any cancer cells that are left. Treatment given after the surgery, to lower the risk that the cancer will come back, is called adjuvant therapy.
Radiation therapy is a cancer treatment that uses high-energy x-rays or other types of radiation to kill cancer cells or keep them from growing. External radiation therapy uses a machine outside the body to send radiation toward area of the body with cancer.
External radiation therapy may also be used as palliative therapy to relieve symptoms and improve quality of life.
Chemotherapy is a cancer treatment that uses drugs to stop the growth of cancer cells, either by killing the cells or by stopping the cells from dividing. When chemotherapy is taken by mouth or injected into a vein or muscle, the drugs enter the bloodstream and can reach cancer cells throughout the body (systemic chemotherapy). Topical chemotherapy for vulvar cancer may be applied to the skin in a cream or lotion. The way the chemotherapy is given depends on the type and stage of the cancer being treated.
See Drugs Approved to Treat Vulvar Cancer for more information.
Immunotherapy is a treatment that uses the patient's immune system to fight cancer. Substances made by the body or made in a laboratory are used to boost, direct, or restore the body's natural defenses against cancer.
Imiquimod is an immune response modifier used to treat vulvar lesions and is applied to the skin in a cream.
Information about clinical trials is available from the NCI website.
For information about side effects caused by treatment for cancer, visit our Side Effects page.
For some patients, taking part in a clinical trial may be the best treatment choice. Clinical trials are part of the cancer research process. Clinical trials are done to find out if new cancer treatments are safe and effective or better than the standard treatment.
Many of today's standard treatments for cancer are based on earlier clinical trials. Patients who take part in a clinical trial may receive the standard treatment or be among the first to receive a new treatment.
Patients who take part in clinical trials also help improve the way cancer will be treated in the future. Even when clinical trials do not lead to effective new treatments, they often answer important questions and help move research forward.
Some clinical trials only include patients who have not yet received treatment. Other trials test treatments for patients whose cancer has not gotten better. There are also clinical trials that test new ways to stop cancer from recurring (coming back) or reduce the side effects of cancer treatment.
Clinical trials are taking place in many parts of the country. Information about clinical trials supported by NCI can be found on NCI’s clinical trials search webpage. Clinical trials supported by other organizations can be found on the ClinicalTrials.gov website.
As you go through treatment, you will have follow-up tests or check-ups. Some tests that were done to diagnose or stage the cancer may be repeated to see how well the treatment is working. Decisions about whether to continue, change, or stop treatment may be based on the results of these tests.
Some of the tests will continue to be done from time to time after treatment has ended. The results of these tests can show if your condition has changed or if the cancer has recurred (come back).
It is important to have regular follow-up exams to check for recurrent vulvar cancer.
For information about the treatments listed below, see the Treatment Option Overview section.
Treatment of vulvar intraepithelial neoplasia (VIN) may include the following:
For information about the treatments listed below, see the Treatment Option Overview section.
Treatment of stage I vulvar cancer and stage II vulvar cancer may include:
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. General information about clinical trials is also available.
For information about the treatments listed below, see the Treatment Option Overview section.
Treatment of stage III vulvar cancer may include:
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. General information about clinical trials is also available.
For information about the treatments listed below, see the Treatment Option Overview section.
Treatment of stage IVA vulvar cancer may include:
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. General information about clinical trials is also available.
There is no standard treatment for stage IVB vulvar cancer. Chemotherapy has been studied and may be used if the patient can tolerate it.
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. General information about clinical trials is also available.
For information about the treatments listed below, see the Treatment Option Overview section.
Treatment of locally recurrent vulvar cancer may include:
Use our clinical trial search to find NCI-supported cancer clinical trials that are accepting patients. You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done. General information about clinical trials is also available.
For more information from the National Cancer Institute about vulvar cancer, see the following:
For general cancer information and other resources from the National Cancer Institute, visit:
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PDQ® Adult Treatment Editorial Board. PDQ Vulvar Cancer Treatment. Bethesda, MD: National Cancer Institute. Updated <MM/DD/YYYY>. Available at: https://www.cancer.gov/types/vulvar/patient/vulvar-treatment-pdq. Accessed <MM/DD/YYYY>. [PMID: 26389324]
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