What you should know about cervical cancer
Women are encouraged to take steps to stay safe from the most deadly cancer among them. Fed by the silence of stigma, it is on the rise, but potentially highly preventable.
Each year, about 6,000 women are diagnosed with cervical cancer in South Africa, according to the National Cancer Registry – ‘but this is likely to be a vast underestimation of the real burden of disease,’ says Dr Elize Wethmar, a gynaecological oncologist at Life The Glynnwood in Benoni. It’s our second most common cancer and the deadliest, killing more women than any other cancer and leaving many infertile.
The World Health Organization estimates deaths will go up from eight a day to 12 by 2025. The good news is that it’s highly preventable and treatable, provided women go for regular screenings to catch it early. ‘Screening is crucial as cervical cancer may have very few signs or symptoms until it’s far advanced,’ says Dr Bruce Howard, a gynaecological oncologist in the Life Oncology unit based at Life Vincent Pallotti Hospital in Cape Town.
What causes cervical cancer?
Cervical cancer develops slowly, with abnormal changes in the cells that line the cervix (the narrow passage forming the lower end of the uterus where it connects to the vagina). In almost all cases the changes are caused by human papillomavirus (HPV), says Dr Wethmar.
This is the most common sexually transmitted infection (STI) globally. A single sexual encounter can be all it takes to become infected, as the virus is transmitted through skin contact only. It’s possible to contract HPV even without penetration. You are at greater risk if you become sexually active early (within a year of starting periods), have multiple sex partners (especially if they have multiple partners), don’t use condoms (which can afford some protection) and have a weakened immune system.
It’s estimated that 60% of sexually active adults have HPV and 80% will pick up an HPV infection at some point in their lives. ‘Most patients with a healthy immune system will be able to clear the virus before it becomes a persistent infection, even if it’s a high-risk virus,’ Dr Wethmar says.
Vulnerable immune system
Cervical cancer is more likely to develop if you have a vulnerable immune system (from conditions such as HIV or diabetes) or an STI, or if you smoke, but some women tick none of these boxes, or just one.
All age groups are susceptible, but women in their 40s and 50s present with the highest incidence of cervical cancer. ‘Poor socio-economic status, lack of education, minimal access to comprehensive healthcare and ineffective screening policies also increase cervical cancer risk,’ says Dr Wethmar.
How is it detected?
‘Early stage cervical cancer presents typically with post-coital bleeding, abnormal bleeding patterns and discharge. It’s rarely associated with pain,’ explains Dr Wethmar. This makes it essential for all sexually active women to go for screenings, particularly if you are at high risk.
The Cancer Association of South Africa (CANSA) advises that you start Pap smears within two years of becoming sexually active, and thereafter at least every two years, or yearly if you’ve ever had precancerous changes or have other increased risk factors.
How is it treated?
If the smear is abnormal, your health professional should perform a colposcopy (where your doctor examines your cervix with a microscope) and take a biopsy of the affected area for analysis. There are three stages of precancerous cells:
- Stage 1: may be managed conservatively, with regular follow-up
- Stage 2 or 3: may have to be removed (this is usually done in theatre, but may be possible in a doctor’s rooms)
‘It’s a minor procedure with minimal or no pain,’ says Dr Howard. ‘There are no long-term side effects and it doesn’t usually affect falling pregnant or having a baby.’ If, however, cancer is already present, you may need surgery, radiotherapy or chemotherapy, or a combination, depending on the stage of the cancer.
Can cervical cancer be prevented?
Prevention now extends beyond having Pap smears to include vaccination against infection by HPV. Cervarix and Gardasil are two vaccines which offer protection from the two main strains of HPV responsible for 70% of cervical cancers and genital warts, Dr Howard says. Boys may also be vaccinated to prevent them getting genital warts and penile or anal cancer, and spreading HPV to future partners.
‘Cervical cancer is potentially a completely preventable disease, so it’s very important for all sexually active women to go for regular gynaecological check-ups every year or two, including a Pap smear, and if they develop any symptoms, such as discharge or abnormal bleeding, they should consult their doctor or gynaecologist immediately,’ Dr Howard says.
The information is shared on condition that readers will make their own determination, including seeking advice from a healthcare professional. E&OE. Life Healthcare Group Ltd does not accept any responsibility for any loss or damage suffered by the reader as a result of the information provided.