Vaginal cancer

Vaginal cancer

Definition:

Vaginal cancer is a rare cancer that occurs in your vagina — the muscular tube that connects your uterus with your outer genitals. Vaginal cancer most commonly occurs in the cells that line the surface of your vagina, which is sometimes called the birth canal.

While several cancers can spread to your vagina from other places in your body, cancer that begins in your vagina (primary vaginal cancer) is rare.
Women with early-stage vaginal cancer have the best chance for a cure. Vaginal cancer that spreads beyond the vagina is much more difficult to treat

Symptoms:

Early vaginal cancer may not cause any signs and symptoms. As it progresses, vaginal cancer may cause signs and symptoms such as:

• Unusual vaginal bleeding, for example, after intercourse or after menopause
• Watery vaginal discharge
• A lump or mass in your vagina
• Painful urination
• Constipation
• Pelvic pain

When to see a doctor
See your doctor if you have any signs and symptoms related to vaginal cancer, such as abnormal vaginal bleeding. Since vaginal cancer doesn't always cause signs and symptoms, follow your doctor's recommendations about when you should have routine pelvic exams.

Causes:

It's not clear what causes vaginal cancer. In general, cancer begins when healthy cells acquire a genetic mutation that turns normal cells into abnormal cells. Healthy cells grow and multiply at a set rate, eventually dying at a set time. Cancer cells grow and multiply out of control, and they don't die. The accumulating abnormal cells form a mass (tumor). Cancer cells invade nearby tissues and can break off from an initial tumor to spread elsewhere in the body (metastasize).

Types of vaginal cancer
Vaginal cancer is divided into different types based on the type of cell where the cancer began. Vaginal cancer types include:

• Vaginal squamous cell carcinoma, which begins in the squamous cells — thin, flat cells that line the surface of the vagina — and is the most common type
• Vaginal adenocarcinoma, which begins in the glandular cells on the surface of your vagina
• Vaginal melanoma, which develops in the pigment-producing cells (melanocytes) of your vagina
• Vaginal sarcoma, which develops in the connective tissue cells or smooth muscles cells in the walls of your vagina

Complications:

 Vaginal cancer may spread (metastasize) to distant areas of your body, such as your lungs, liver and pelvic bones.

Treatments and drugs:

Your treatment options for vaginal cancer depend on several factors, including the type of vaginal cancer you have and its stage. You and your doctor work together to determine what treatments are best for you based on your goals of treatment and the side effects you're willing to endure. Treatment for vaginal cancer typically includes surgery and radiation.

Surgery
Surgery to remove the cancer is primarily used for early-stage vaginal cancer that's limited to the vagina or, in selected cases, nearby tissue. Because many important organs are located in your pelvis, surgery to remove larger tumors would require removal of these organs. For this reason, your doctor may attempt to control your cancer through other treatment methods first. Types of surgery that may be used in women with vaginal cancer include:

• Removal of small tumors or lesions. Cancer limited to the surface of your vagina may be cut away, along with a small margin of surrounding healthy tissue to ensure that all of the cancer cells have been removed.
• Removal of the vagina (vaginectomy). Removing part of your vagina (partial vaginectomy) or your entire vagina (radical vaginectomy) may be necessary to remove all of the cancer. Depending on the extent of your cancer, your surgeon may recommend surgery to remove your uterus and ovaries (hysterectomy) and nearby lymph nodes (lymphadenectomy) at the same time as your vaginectomy.
• Removal of the majority of the pelvic organs (pelvic exenteration). This extensive surgery may be an option if cancer has spread throughout your pelvic area or if your vaginal cancer has recurred. During pelvic exenteration, the surgeon removes many of the organs in your pelvic area, including your bladder, ovaries, uterus, vagina, rectum and the lower portion of your colon. Openings are created in your abdomen to allow urine (urostomy) and waste (colostomy) to exit your body and collect in ostomy bags.

If your vagina is completely removed, you may choose to undergo surgery to construct a new vagina. Surgeons use pieces of skin, sections of intestine or flaps of muscle from other areas of your body to form a new vagina. With some adjustments, a reconstructed vagina allows you to have vaginal intercourse. However, a reconstructed vagina isn't the same as your own vagina. For instance, a reconstructed vagina lacks natural lubrication and creates a different sensation when touched due to changes in surrounding nerves.

Radiation therapy
Radiation therapy uses high-powered energy beams, such as X-rays, to kill cancer cells. Radiation can be delivered two ways:

• External radiation. External beam radiation is directed at your entire abdomen or just your pelvis, depending on the extent of your cancer. During external beam radiation, you're positioned on a table and a large radiation machine is maneuvered around you in order to target the treatment area. Most women with vaginal cancer receive external beam radiation.
• Internal radiation. During internal radiation (brachytherapy), radioactive devices — seeds, wires, cylinders or other materials — are placed in your vagina or the surrounding tissue. After a set number of days, the devices are removed. Women with very early-stage vaginal cancer may receive internal radiation only. Other women may receive internal radiation after undergoing external radiation.

Radiation therapy kills quickly growing cancer cells, but it may also damage nearby healthy cells, causing side effects. Side effects of radiation depend on the radiation's intensity and where it's aimed.
Other options
If surgery and radiation can't control your cancer, you may be offered other treatments, including:

• Chemotherapy. Chemotherapy uses chemicals to kill cancer cells. It isn't clear whether chemotherapy is useful in women with vaginal cancer. For this reason, chemotherapy generally isn't used on its own to treat vaginal cancer. Chemotherapy may be used during radiation therapy to enhance the effectiveness of radiation. 
• Clinical trials. Clinical trials are experiments to test new treatment methods. While a clinical trial gives you a chance to try the latest treatment advances, a cure isn't guaranteed. Discuss available clinical trials with your doctor to better understand your options, or contact the National Cancer Institute or the American Cancer Society to find out what clinical trials might be available to you.