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Table
of Contents
- What Is HPV?
- Genital Warts
- Cervical Dysplasia and Cervical Cancer
- Anal Dysplasia and Anal Cancer
- Prevention of HPV
- Taking Care of Yourself
What Is HPV?
Human papillomavirus (HPV) is the
name of a large group of viruses. Certain types of HPV can cause warts on the
hands, feet, mouth, or throat. About 30 to 40 types can cause infections in the
genital area (the vulva, vagina, penis, buttocks, scrotum, and anus).
Genital HPV is a very common sexually transmitted disease or infection (STD or STI)
worldwide. The World Health Organization (WHO) estimates that more than 290
million women were infected with HPV in 2013. HPV infection is responsible for
almost half a million cases of cervical cancer each year, over 90 percent of
which occur in the developing world.
Genital HPV types are often grouped
as "low risk" or "high risk." Low-risk types can cause
genital warts. High-risk types can cause cervical cancer or cancer of the vulva, vagina,
anus, and penis. The types of HPV that can cause genital warts are not the same
as the types that can cause cancer. However, if you have warts, you may have
also been exposed to the types of HPV that can cause cancer.
Genital HPV is spread easily through
skin-to-skin contact during vaginal or anal sex with someone who has the
infection. Insertive or penetrative sex is not required for HPV to be spread
between sexual partners. Condoms and other latex barriers do not totally
prevent transmission. Most people with HPV do not know they have it because
they do not develop symptoms, yet they can still pass it on to someone else.
Although most sexually active women
and men will be infected with HPV at some time, nine times out of ten, the
body's immune system clears HPV infection naturally (gets rid of the infection
without treatment) within two years. Because HIV weakens the immune system, people living with HIV (HIV+
people) are more likely to be infected with HPV than HIV-negative people. One
study found HPV in more than three out of four women living with HIV. Women
living with HIV who have HPV are also more likely to have:
- Difficulty clearing the infection naturally
- HPV infections that were once under control and come back again
- HPV that responds poorly to standard treatment; multiple therapies using different methods may be needed
- Several types or strains of HPV at once
- Infection with the "high risk" HPV types that can cause cancer
- Higher risk of developing cervical and anal cancer when infected with the "high risk" types
If you have sex, it is important to
be checked regularly by your health care provider for signs of HPV such as
genital warts, cervical cancer, and anal cancer. For information on
vaccines and routine screenings for HPV, see the section on Prevention of HPV
below.
Certain types of HPV can cause warts
on the vulva (including the labia, or 'lips'), in or around the vagina or anus,
or on the penis, scrotum, groin, or thigh. Warts can appear anywhere from a few
weeks to a few months after you are exposed to HPV. They can even appear years
after exposure.
Symptoms:
- Flesh-colored, pinkish, or white warts that appear as small bumps or groups of bumps. They can be raised or flat, different sizes, and are sometimes shaped like cauliflower.
Diagnosis:
- Health care providers can usually identify genital warts by looking at them
- Sometimes a biopsy is done (a sample of the suspected wart is cut off and examined under a microscope)
- Some health care providers may use a vinegar solution to help identify flat warts with the naked eye; however, this test may sometimes wrongly identify normal skin as a wart
Treatment:
There is no cure for HPV, but
genital warts can be treated by removing the wart if they do not go away on
their own.
- The following treatments must be done in a health care provider's office:
- TCA (trichloracetic acid): A chemical is applied to the surface of the wart
- Cryotherapy: Freezing off the wart with liquid nitrogen
- Electrocautery: Burning off the wart with an electrical current
- Laser therapy: Using an intense light to destroy the wart
- Excision: Cutting out the wart
- Some treatments can be done at home with prescription creams: Aldara or Beselna (imiquimod), Condylox (podofilox or podophyllotoxin), and Veregen (sinecatechins, or green tea extracts). Because Aldara and Beselna act on the immune system, it is important to talk with your health care provider about the best prescription wart treatment for you if you are living with HIV.
- Do not use over-the-counter wart removal products to treat genital warts
- Some wart treatments should not be used by pregnant women or women who are breastfeeding
- Warts can reappear after successful treatment
If left untreated, genital warts may
go away, remain unchanged, or increase in size or number. Some people decide
not to have treatment right away to see if the warts will go away on their own.
When considering treatment options, you and your health care provider may take
into account the size, location and number of warts, changes in the warts, your
preference, and the side effects of treatment.
Many women living with HIV,
especially those with low CD4 cell counts, may not be able to get rid of
genital warts using standard treatments. Several different treatments may be
needed. For women living with HIV, one of the best ways to strengthen the
immune system and help get rid of genital warts is to take HIV drugs. If you
are already taking HIV drugs, it is important that you take them exactly as
directed so that they can increase your CD4 count and fight off HPV.
For pictures of different sexually
transmitted infections, including genital warts caused by HPV, please click here (note: some of these images are graphic).
Certain types of HPV can cause
abnormal cells to form. This is called dysplasia. The main place dysplasia
occurs is on the cervix (entrance to the womb). Other less common areas are the
vagina, vulva, and anus. Dysplasia is not cancer, but if left untreated, it can
develop into cancer. For this reason, cells with dysplasia are sometimes
referred to as pre-cancerous cells.
Screening for dysplasia and cervical
cancer is essential to find and treat early pre-cancerous changes and to
prevent cervical cancer. Traditionally, the Papanicolaou test (Pap test or Pap
smear) has been done. This test uses a small brush to collect a few cells to
check for changes in the cervix. Now, liquid based systems to screen samples of
cervical cells are much more common and are effective for finding abnormal
cells.
Because Pap tests require
laboratories and people skilled in reading them, resource-limited countries
offer different tests to screen for dysplasia and cervical cancer. One method
is called visual inspection with acetic acid, or VIA. When using VIA, health
care providers swab acetic acid (also known as vinegar) on the cervix and look
directly at it to see if any areas need treatment. Other countries use HPV
tests, which test samples taken from your cervix for the presence of HPV's DNA
(its genetic material).
Cervical cancer usually takes years
to develop, but it does not have symptoms until it is quite advanced. This is
why getting screened on a regular basis is important; screening can catch
potential problems before they get worse. It is especially important for women
living with HIV to have regular cervical screening tests every year. This is
because women living with HIV are more likely to have abnormal cervical
screening tests than HIV-negative women.
Cervical cancer can be life
threatening. It is one of the few AIDS-defining conditions specific to women.
Fortunately, it can be prevented through early diagnosis and treatment.
Symptoms:
- Many women do not experience symptoms
- In very advanced stages, a woman may experience abdominal pain, vaginal discharge, bleeding after having vaginal sex, and bleeding between periods
Screening
and diagnosis:
In the US:
- Women living with HIV should have a complete gynecological examination, including a cervical screening test and a pelvic exam, when they are first diagnosed, and then another test six months later
- If both tests are normal, a repeat cervical screening test should be done every year
- Women living with HIV who have had dysplasia in the past should receive a cervical screening test every six months
- Pregnant women living with HIV should have a cervical cancer screening test when they first seek prenatal care
- Women who were born with HIV (perinatally infected) are more at risk of having high-risk types of HPV; therefore, cervical screening should start prior to age 21 if they are sexually active
- An abnormal cervical screening test can indicate inflammation, infection, dysplasia, or cancer
- If you have an abnormal cervical screening test, you will need a colposcopy (an exam of your cervix using a magnifier to look at the tissue more closely) and a biopsy (a small amount of tissue is removed so it can be checked under a microscope for signs of cancer)
- An HPV test can be used along with the cervical screening test to look for high-risk types that may lead to cancerous and pre-cancerous conditions. Speak with your health care provider to see if your cervical screening test includes an HPV test.
From the World Health Organization
(WHO):
- Women living with HIV should be screened for cervical cancer, regardless of age
- Women living with HIV should be screened for cervical cancer regularly (e.g., once a year)
- If you have a VIA or HPV test that shows an abnormality, you may need treatment (see below); which screening tests and treatments are available will depend on where you live
Many countries have screening and
diagnosis guidelines that differ from the WHO and US guidelines listed above.
Please check with your country or region to see what the standard of care
is in your area.
Treatment
for cervical dysplasia:
If you have dysplasia, discuss
treatment choices with your health care provider. Most treatments focus on
destroying the abnormal cells so that they do not become cancer.
- Laser therapy: Using an intense light to destroy the cells
- Cold-knife cone biopsy (conization): Cutting the cells out (an operation)
- LEEP: Loop electrosurgical excision procedure, which uses a thin electrified wire loop to cut out the cells
- Cryotherapy: Freezing the cells with liquid nitrogen
- In cases of mild dysplasia, your health care provider may just monitor the cervix by colposcopy, repeat cervical screening tests, and/or an HPV test
Cervical dysplasia is more common in
women living with HIV who have advanced HIV disease and low CD4 cell counts.
Cervical dysplasia is often more serious and difficult to treat in women living
with HIV than HIV-negative women.
Treatment
of cervical cancer:
Cervical cancer is most treatable
when it is diagnosed and treated early, so regular cervical screening tests are
extremely important. Treatment depends on the type of cervical cancer and how
far it has spread. Often, more than one kind of treatment is used. Treatments
include:
- Surgery: Cancer tissue is cut out in an operation
- Chemotherapy: Drugs (pills and/or intravenous medications) are used to shrink or kill the cancer
- Radiation: High-energy rays (similar to X-rays) are used to kill the cancer cells
For more information, see our
article on Cancers.
Certain types or strains of HPV may
cause dysplasia and cancer in the anus. Although the risk of developing
dysplasia is higher among men who have sex with men, women are also at risk,
especially those living with HIV or who have had receptive anal sex with a man.
Symptoms:
- Many women do not experience symptoms
- Anal or rectal bleeding, irritation, itching, or burning
- In very advanced stages, there may be abscesses, lumps, ulcers, and anal discharge
Screening
and diagnosis:
- Careful physical examination by a health care provider may be the best way to find anal cancers
- An abnormal anal Pap test may be a sign of dysplasia or cancer
- Your provider may also perform a digital rectal exam (DRE), in which she/he slides a lubricated, gloved finger through your anus and into your rectum to feel for abnormal masses
- If you have symptoms, you may need an anoscopy (an exam of the anus using a magnifier to look at the tissue more closely) and a biopsy (tissues are removed so they can be checked under a microscope for signs of cancer)
- It is important to ask your health care provider to check for anal cancer on a regular basis
Treatment
for anal dysplasia:
If you have dysplasia, discuss
treatment choices with your health care provider. Most treatments focus on
destroying the abnormal cells so that they do not become cancer.
- Infrafred coagulation: Using infrared light to cut off the blood supply to the cells and thereby kill them
- Electrocautery: Burning off the cells with an electrical current
- Laser therapy: Using an intense light to destroy the cells
- Surgery: Using a surgical knife to cut out the cells
- Cryotherapy: Freezing the cells with liquid nitrogen
Anal dysplasia is more common in
women living with HIV than HIV-negative women, especially women with advanced
HIV disease and low CD4 cell counts. Anal dysplasia is often more serious and
difficult to treat in women living with HIV than HIV-negative women. For women
living with HIV, taking HIV drugs can strengthen the immune system and help
anal dysplasia become less severe. If you are already taking HIV drugs, it is
important that you take them exactly as directed so that they can increase your
CD4 count and fight the HPV that can cause anal cancer.
Treatment
of anal cancer:
Anal cancer is most treatable when
it is diagnosed and treated early, so regular exams are extremely important.
Treatment depends on the type of anal cancer and how far it has spread. Often,
more than one kind of treatment is used. Treatments include:
- Surgery: Cancer tissue is cut out in an operation
- Chemotherapy: Drugs (pills and/or intravenous medications) are used to shrink or kill the cancer
- Radiation: High-energy rays (similar to X-rays) are used to kill the cancer cells
For more information, see our fact
sheet on Cancers.
Vaccines
There are currently three HPV
vaccines: Gardasil (made by Merck; also known as Silgard), Gardasil-9 (also
made by Merck), and Cervarix (made by GlaxoSmithKline). All three have been
approved by the US Food and Drug Administration (FDA), Health Canada, and the
European Medicines Agency (EMA). Gardasil-9 is still awaiting approval in the
UK. In the US, Gardasil products are approved for females and males ages 9 to
26, while Cervarix is approved for females ages 10 to 25. There are now
demonstration projects that are bringing HPV vaccines to girls and women in
low-income countries as well.
The vaccines protect against types
of HPV that cause the majority of cervical cancers and genital warts. Recent
studies have shown that these vaccines can also provide protection against
HPV-related vaginal cancers, vulvar cancers, and anal cancer in women. The vaccines
do not protect against less common HPV types. Therefore, health care providers
still recommend regular cancer screening tests to look for signs of cancer.
It is best if young people get all
doses of the vaccine before their first sexual contact. This helps them develop
an immune response before they are exposed to HPV. People who are infected with
some types of HPV may still benefit from the vaccine's effects against other
types of HPV. The US Centers for Disease Control and Prevention (CDC) recommends
HPV vaccines for all girls and young women ages 11 through 26 and all boys and
young men ages 11 through 21 (even if they have already become sexually
active).
In Canada, the National Advisory
Committee on Immunization (NACI) recommends Gardasil vaccination for females
and males ages nine through 26, or vaccination with Cervarix for girls and
young women ages nine through 26. In the UK, vaccination with Gardasil is
offered to girls ages 12 and 13 through the National Health Service.
Pregnant women should not receive the vaccine.
However, it is safe to get the vaccine while breastfeeding. Speak to your
health care provider about the HPV vaccine to see if it is right for you. In the
US, there are payment assistance programs for people who cannot afford the HPV
vaccines; see the resource section of this article for contact information.
Based on recent study data showing
that HPV vaccines are very good at getting the body to produce a strong immune
response, there is a move toward reducing the number of doses from three to
two. Girls and boys ages nine to 13 have a stronger response to the vaccine
than older adolescents. Therefore, the European Medicines Agency recently
approved that Cervarix be offered as a two-dose vaccination for nine to
14-year-old girls and boys and that Gardasil be offered as two-dose vaccination
for nine to 13-year-old girls and boys. Neither of these two-dose schedules has
been approved in the US.
To reduce the total number of
injections, future HPV vaccine development includes the possibility of adding
HPV vaccine to another existing vaccine (e.g., combining it with measles in one
shot).
Routine
Screenings
Regular pelvic and anal exams and cervical screening tests are very important.
While they cannot prevent HPV-related problems, they can help catch warts and
dysplasia (abnormal or pre-cancerous cells) before they get worse and cause
greater problems.
Studies have shown that, although
women living with HIV are at an increased risk for cervical cancer, nearly one
in four women living with HIV in the US did not get their recommended yearly
cervical screening tests (note: two cervical cancer screenings are recommended
in the first year after a woman is first diagnosed with HIV). It is very
important that women living with HIV get yearly routine cervical screening
testing and follow up as needed to identify problems before cancer develops.
Follow up involves seeing a gynecologist so that the cells of the cervix can be
looked at closely with a microscope to look for abnormal cells that might be
pre-cancerous. Prevention is always better – healthier, less painful, and less
costly – than treatment.
Condoms
Even though condoms do not fully
protect against HPV, when used correctly they can help reduce the chances that
HPV will be spread.
Not
Smoking
Smoking has been shown to increase
the chance of developing several types of cancer including cervical and anal
cancers. If you smoke, it is a good idea to try and quit. Talk with your health
care provider about stopping smoking – there are many tools to help
you quit. You can also find lots of information and support online (http://www.smokefree.gov).
HPV can be very serious for people
living with HIV. Since there are frequently no symptoms, getting regular exams
from your health care provider is the best way to be sure that any problems are
found and treated early.
See more at: The Well Project
Additional
Resources
Select the links below for
additional material related to HPV.
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