What Is Cervical Cancer?
In honour of Cervical Cancer Awareness Month, LetsGetChecked is here to provide you with everything you need to know about cervical cancer, alongside Dr. Kelly Orzechowski who is a specialist in Maternal Fetal Medecine in Virginia Hospital Center.
Let's take a look at some quick fire facts regarding cervical cancer:
Cervical cancer is the fourth most common cancer in women.
Cervical cancer is most commonly diagnosed between the ages of 35 and 44.
Cervical cancer is most commonly caused by the HPV virus which 1 in 2 people will carry at some point in their lives.
- What Is Cervical Cancer?
- What Is The Human Papillomavirus Virus (HPV)?
- What Causes Cervical Cancer?
- What Are The Risk Factors For Cervical Cancer?
- What Are The Symptoms Of Cervical Cancer?
- How Often Should You Get Screened For Cervical Cancer?
- Learn More About Cervical Cancer With Dr. Dominic Rowley
What Is Cervical Cancer?
First things first, let’s talk about the cervix, and where it is!
The cervix is located in the lower part of the uterus that connects to the vagina.
This is where the cervix is located within the female reproductive system:
Put simply, cervical cancer is cancer of the cervix. Cervical cancer occurs when the cells of the cervix become mutated, or experience genetic changes.
Cervical cells may acquire genetic changes for a number of reasons.
Most commonly, cervical cancer is caused by a viral infection called the human papillomavirus virus (HPV), but how does this happen?
Dr. Kelly says "“HPV” stands for human papilloma virus and it is named for the warts (or papillomas) that some types of HPV cause. There are about 100 types of HPV. Each type of HPV in the group is given a number, which is called its HPV subtype."
We will dig into HPV soon but it’s important to remember that cancers occur when a stimulant triggers mutation in your cells.
Often, cancer is a result of the body’s immune system being unable to cope with an infection.
In a healthy body, our cells grow and divide for a set time, carry out their functions for a set time and die after a set period of time. This is known as the cell cycle or cell division cycle.
If a high-risk cancerous infection goes undetected for a prolonged period of time, normal functioning cells will become mutated, multiply and won’t die when they should.
Cancer is defined as the uncontrolled growth of abnormal cells in a part of the body
What Is The Human Papillomavirus Virus (HPV)?
Human papillomavirus virus (HPV) is a viral infection that may be passed through skin to skin contact.
HPV infected cells can be found on the vagina, cervix and vulva in women. HPV cells are found in the inner foreskin and urethra of the penis in men.
HPV is most commonly contracted through vaginal or anal sex. HPV is a group of more than 150-related viruses.
There are different types of HPV virus and they don’t all cause cancer. Some strains may cause genital warts and others strains don't cause any symptoms at all.
HPV is so common that nearly all men and women will contract the virus at some point in their lives.
As mentioned, non-cancerous strains of HPV may cause warts or no symptoms at all.
Dr. Kelly says "In most cases, HPV resolves on its own within 1-2 years. But when HPV infection persists, it can cause cervical cancer and cancer of the vulva, vagina, penis, or anus. It can also cause cancer in the back of the throat, including the base of the tongue and tonsils (called oropharyngeal cancer)."
Cancerous strains of HPV may cause a number of cancers including mouth, tongue and cancer of the oropharynx. HPV may also cause cancer of the vulva, vagina and penis.
Almost all cervical cancers are caused by HPV.
13 strains of high-risk HPV are cancer-causing. These strains are known by numbers: 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59 and 68. HPV strains 16 & 18 are responsible for 70% of cervical cancers.
Dr. Kelly explains "Cancer takes many years to develop after a person gets HPV infection. The HPV subtypes that can cause genital warts are not the same as the HPV subtypes that can cause cancer. Approximately 40 HPV subtypes can affect the genital area, and these 40 subtypes are divided into "low-risk" and "high-risk" strains. High-risk strains are the HPV subtypes associated with cancer."
HPV strains 6 & 11 are responsible for 60% of genital warts and lesions.
Most women will not experience symptoms associated with HPV, however if they do, women may experience:
- Warts on the vagina, cervix or anus
- Warts on the back of the throat
- Abnormal skin changes on the vagina, cervix or anus
Abnormal cervical cells rarely present symptoms but in some cases, symptoms can include:
- Irregular vaginal bleeds
- Abnormal vaginal discharge
- Pain in the lower belly or pelvis
- Pain during sex
If you experience any of the above symptoms, you need to get tested immediately.
Early testing and diagnosis gives you the best chance of successful treatment.
The time interval between getting the HPV infection and development of cervical cancer is approximately 15 years. If women undergo their routine smear test and test regularly for HPV infection, precancerous lesions can be easily detected and treated in their earliest stage, effectively preventing cancer.
What Causes Cervical Cancer?
Traditionally, little has been known about what causes cervical cancer, bar the fact that HPV is somewhat involved in the process.
More recently,The American Cancer Society says that there has been progress in understanding what causes cervical cancer as well as some risk factors that will lead to an increased risk of you being diagnosed with cervical cancer.
Let’s take a look at some of the background when it comes to cervical cancer and genetics.
One of the biggest risk factors connected to cancer depends on your DNA or genetics. Let’s simplify this. A large majority of people are likely to look like their mother or their father. You might have your dad’s eyes or your mom’s nose, and that's because you share genetic material.
Genetic material doesn’t simply quantify looks, it can also dictates our physical health. Overall, inherited mutations play a role in 5-10% of all cancers.
Your DNA (deoxyribonucleic acid), can be be defined as “the carrier of your genetic information.”
It can also be described as the fundamental characteristics which someone may have that makes them distinguishable to their peers.
The function of DNA is to offer instructions in the development, growth and cellular function of living things.
We mentioned the cell cycle earlier. Some of our genes control when cells grow, divide and die.
Oncogenes are the genes that help cells grow, divide and stay alive. Tumour suppressor genes are those that ensure that cell growth is kept under control. DNA mutations can cause the work of oncogenes to speed up and the work of tumour suppressor genes to slow down.
Therefore, it can be surmised that one of the biggest factors that are included in your cancer risk is your genetic makeup.
What Are The Risk Factors For Cervical Cancer?
Let’s delve into other risk factors of cervical cancer...
You Have Contracted A High Risk HPV Infection
We have spoken about HPV but let’s look at how it actually causes cervical cancer.
Low risk strains of HPV may cause the growth of warts (papillomas) on or around the point of contact, but they are rarely connected to cancer. A lot of the time low risk strains of HPV do not cause any symptoms.
If you are infected with a high risk strain, you are more likely to develop cervical cancer.
HPV causes the production of two proteins known as E6 and E7. These proteins cause tumour suppressor genes to “switch off”, thus leaving your immune system to go into overdrive, producing too many cells on the lining of the cervix and allowing for cell changes which ultimately lead to cervical cancer.
HPV infection is common and there is no cure. Sometimes the body will be able to clear the infection itself, however, without screening you are at a higher risk of developing chronic conditions and cancer.
You Are A Smoker
Numerous studies have shown that tobacco byproducts or what’s more frightening, tobacco-specific carcinogens have been found in the cervical mucus of those who smoke, which paints a picture of the severe connection between smoking and your cancer risk.
In one long-term study which looked at the connection between current, former, non-smokers and cancer, it was found that:
Female smokers are twice as likely to be diagnosed with cervical cancer than non-smokers.
The risk of smoking and cervical cancer is dependent on current smoking intensity.
Former smokers will not experience excess risk in receiving a cervical cancer diagnosis, however more study into the connection between the past-smoking risk needs further study.
Researchers say that smoking works in two strands that puts smokers at a higher risk of developing cervical cancers:
Smoking is believed to damage the immune system, so it increases your susceptibility to cervical cancer while also lowering your body’s ability to fight the infection.
Smoking is believed to cause cells mutations in the cervix, which can contribute to the growth of abnormal cells, and cervical cancer.
You Have (Had) A Sexually Transmitted Disease
Chlamydia is the most commonly reported sexually transmitted disease in the world after HPV.
35 million deaths have been attributable to H.I.V. since the beginning of the AIDS epidemic.
According to a number of studies, a diagnosis of both chlamydia and H.I.V. are connected to cervical cancer.
What can be frightening to think about is the fact that both chlamydia and HPV may not show symptoms, yet they can cause a whole host of negative consequences.
It has been shown that there is a connection between women who have high-risk cervical cancer and evidence of past or current chlamydia infections.
H.I.V., also known as a Human Immunodeficiency Virus is a condition in which the immune system begins to attack itself. HPV and HIV are connected with one another.
A H.I.V. diagnosis puts you at an increased risk to contract HPV, and a HPV infection puts you at higher risk to contract H.I.V.
You Are Obese
According to one report that analyzed nine studies regarding the connection between cervical cancer and weight; a state of obesity puts you at a higher risk for cervical cancer and being overweight drastically increases your chances of developing cervical cancer.
You Have Had Multiple Full-Term Pregnancies
If you have had over 3 full-term pregnancies, you increase your risk of developing cervical cancer, however the reasoning behind this is unclear. It is believed that hormonal and physical changes during pregnancy can alter the cells of the cervix as well as making you more susceptible to HPV infection.
Women who have had three or more full-term pregnancies, or who had their first full-term pregnancy before age 17, are twice as likely to get cervical cancer.
Your Socioeconomic Status
Those who do not have access to regular screening or a professional healthcare regime are twice as likely to develop cervical cancer than those who have access to regular screening and a physician.
You Have A Family History Of Cervical Cancer
We touched on how your genetics can make it more likely for you to develop cervical cancer. Some researchers suspect that some instances of this familial tendency are caused by an inherited condition that makes some women less able to fight off HPV infection than others.
What Are The Symptoms Of Cervical Cancer?
Women with cervical cancer often do not show any signs or symptoms of the cancer during the early stages. As the cancer develops and grows (metastasizes) and invades other nearby tissues, women may begin to experience physical symptoms that are often localized in the vagina.
Other symptoms of cervical cancer include:
How Often Should You Get Screened For Cervical Cancer?
It is recommended if you are sexually active that you have a HPV test done regularly.
Dr. Kelly says "Women in their 20s are advised to get Pap smears, not HPV tests, because the virus is so common that most would test positive for infections that would most likely clear up on their own."
Recent research shows that HPV tests may be more effective than traditional pap smears. If you are concerned or curious about getting tested, you can visit www.letsgetchecked.com and talk to a member of your team via our private messenger or purchase one of our at-home HPV tests.
All women should begin screening for cervical cancer at the age of 21.
However, more recently, there has been emerging studies that say regular HPV testing is more effective than a pap smear.
Dr. Kelly says that there are a number of reasons for the controversy between doing a pap smear or a HPV test.
Since the HPV test was introduced 15 years ago, cervical cancer screening guidelines continue to change. Currently, most medical groups recommend that women age 30-65 get both an HPV test and Pap smear every 5 years (co-testing), although a Pap test alone every 3 years is an acceptable alternative.
The treatment for cervical cancer includes a hysterectomy, chemotherapy, and radiation.
Smear tests check for abnormal bacterium before they develop into cancerous cells. Any woman who has been sexually active should get tested. Unfortunately, there is no accurate HPV test for men. The best way to avoid getting a sexually transmitted infection is to practice safe sex, by using condoms and having regular sexual health screenings.
When it comes to screening, Dr. Kelly says there are accurate and high quality tests out there that no one should be for-going; "The bottom line is that, unlike most cancers, there are excellent screening tests for cervical cancer. What’s most important is to be screened, regardless of which protocol is followed. All medical professional groups recommend that average-risk women get screened at regular intervals between the ages of 21-65. Women at higher risk for cervical cancer may require more frequent screening/monitoring."
You should consider taking a HPV test if:
- You are over the age of 21
- You have had skin to skin contact with someone who is carrying the HPV virus
- You have had unprotected sex
- Your mother carried the HPV virus during your birth
- You have not received a HPV vaccination
- You began having sex at a young age, early age sexual activity increases your risk of HPV infection
This Cervical Cancer Awareness Month, educate yourself on the steps you can take to reduce your risk of cervical cancer and the screening options of getting screened.
Dr. Kelly's main advice is that screening is necessary and likely to massively reduce your risk of cervical cancer and says:
"I recommend both different screening options (HPV tests and pap smears) based on the age of the women and her risk category."
Learn More About Cervical Cancer With Dr. Dominic Rowley
Take a HPV Test
Written by Hannah Kingston | Medically Approved by Dr. Kelly Orzechowski