How does it develop?
There are two main types of cervical cancer. The most common is squamous cell carcinoma with 80% of cases being of this type. A further 20% of cervical cancers are adenocarcomas.
Nearly all squamous cervical cancers are caused by a common sexually transmitted infection called human papillomavirus (HPV). This is why HPV vaccinations are offered to young people aged 12-13, as it is before they are potentially exposed to the HPV virus (i.e. before they become sexually active).
80% of people will come into contact with HPV at some stage during their life, but this usually clears up on its own without the need for any treatment.
HPV is a group of viruses, of which there are more than 100 different types. It is spread through skin-to-skin sexual contact (so does not require penetrative sex to be transmitted).
The highest rates of HPV infection usually occur between the ages of 15 and 25 years and steadily decline after the age of 40. There are about 12 types of high-risk HPV, so called as they are linked to the development of certain cancers, including cervical.
If the body is unable to clear the virus, there is a risk of abnormal cells developing, which could become cancerous over time.
Key signs of cervical cancer - symptoms
The symptoms of cervical cancer aren’t always obvious, it may not cause any symptoms at all until it’s reached an advanced stage. Some women and people with cervixes do not experience any signs of cervical cancer at all. If you do spot any of these symptoms, do called your GP to get checked.
This is why cervical screening appointments are really important, as they can help pick up high-risk HPV and early changes to cells, before it develops into cancer.
Unusual bleeding
In most cases, vaginal bleeding is the first of the cervical cancer symptoms to be noticeable. It often occurs after having sex.
Bleeding at any time other than your expected monthly period is also considered unusual, including bleeding after the menopause, in-between periods or your periods being much heavier or more painful than normal.
Other symptoms
Other signs of cervical cancer may include pain and discomfort during sex and an unpleasant smelling vaginal discharge.
The majority of people with these symptoms do not have cervical cancer, and more likely to be experiencing other conditions, such as infections, but if you have any of these symptoms, it is important to get them checked out.
Risk Factors
Alongside HPV, there appear to be additional risk factors that affect someone’s chance of developing cancer of the cervix. These include:
- Age: Cervical cancer is more common in younger women and people with cervixes, with more than half of those diagnosed being below the age of 45.
- Smoking – People with a cervix who smoke are twice as likely to develop cervical cancer as those who don’t; this may be caused by the harmful effects of chemicals found in tobacco on the cells, which make the immune system less effective, and less able to clear the HPV virus from your body and more vulnerable to the effects of the virus.
- Immunosuppression drugs – People who are on immunosuppression drugs long term (organ transplant recipients), can be at increased risk of retaining the HPV virus and developing cervical cancer
- Other sexually transmitted disease: People who may have another sexually transmitted disease, for example, chlamydia may be at increased risk of cervical cancer
How is it diagnosed?
You’ll be referred to a gynaecologist or colposcopy clinic if the results of your cervical screening test suggest that there are abnormalities in the cells of your cervix. However, in most cases, the abnormalities do not mean you have cervical cancer.
You may also be referred to a gynaecologist if you have abnormal vaginal bleeding, or other worrying cervical cancer symptoms, such as if your GP has noticed a growth inside your cervix during an examination.
Additionally, your gynaecologist or a specialist nurse may perform a colposcopy – an examination to look for abnormalities in your cervix. During a colposcopy, a small microscope with a light source at the end (colposcope) is used. As well as examining your cervix, your gynaecologist may remove a small tissue sample (biopsy) so that it can be checked under a microscope for cancerous cells.
Cervical Cancer Treatment
Treatment for cervical cancer depends on the size of the cancer cell collection and the shape of it.
The prospect of a complete cure is good for cervical cancer diagnosed at an early stage, this decreases the further the cancer has grown into or around the cervix.
Removing abnormal cells
If your screening results show that you don’t have cervical cancer, but there are biological changes that could turn cancerous in the future, a number of treatment options are available. These include:
- Large loop excision of the transformation zone (LLETZ) – the abnormal cells are removed under local anaesthetic
- Cone biopsy – the area of abnormal tissue, in the shape of a cone, is removed during surgery– this is usually performed under general anaesthetic
Surgery
There are three main types of surgery for cervical cancer:
- Radical trachelectomy – the cervix, surrounding tissue and the upper part of the vagina are removed, but the body of the womb is left in place. This cervical cancer treatment is only a suitable if the diagnosis is made at a very early stage. In addition lymph nodes that are related to this area are sampled to check for microscopic spread
- Hysterectomy – the cervix and womb are removed, usually used to treat stage 1 or 2A cervical cancer
- Pelvic exenteration – a major operation that’s usually only recommended when cervical cancer returns following what was thought to be a previously successful course of treatment, in which the cervix, vagina, womb, bladder, ovaries, fallopian tubes and rectum are removed
Chemoradiation Chemoradiotherapy is mostly likely to be given if your cervical cancer is a stage 1B2 up to a stage 4A. This means being given chemotherapy and radiotherapy treatment together. The aim of the treatment is to lower the risk of the cancer coming back. The most common chemotherapy drug used is Cisplatin.
The radiotherapy part of the dual treatment is planned by a clinical oncologist who will determine the number of treatments (fractions) you will require. This is usually followed by internal radiotherapy, called brachytherapy.
Further information and support
For further information about cervical cancer, treatment options and support, please visit Jo’s Cervical Cancer Trust.