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What is cervical cancer?
The cervix is the lower, narrow end of the uterus that opens into the vagina. Nearly all cervical cancer is caused by long-lasting infection with certain types of the human papillomavirus (HPV), a common virus. This makes cervical cancer remarkable: it is one of the few cancers we can largely prevent. The HPV vaccine stops most infections before they start, and screening (Pap and HPV tests) finds pre-cancerous changes that can be treated long before they ever become cancer. When cancer does develop, radiation combined with chemotherapy is a powerful, often curative treatment.
The main types
Doctors group cervical cancer by where it starts and how it behaves:
| Type | What it means, simply |
|---|---|
| Squamous cell carcinoma | About 7 in 10 cases; starts in the flat cells on the outer surface of the cervix. |
| Adenocarcinoma | Starts in the gland cells of the cervical canal; has become relatively more common and can sit higher up, making it harder to catch on a Pap test. |
| Pre-cancer (dysplasia/CIN) | Abnormal cells that are not yet cancer. Found by screening and easily treated, preventing cancer from ever forming. |
Staging, in plain terms
Cervical cancer uses the FIGO system, which describes how far the cancer has grown from the cervix into nearby tissue, the vagina, the pelvic wall, or beyond — similar in spirit to TNM. Imaging and exam findings set the stage and guide whether surgery or radiation leads treatment.
| FIGO | What it generally means |
|---|---|
| Stage I | Cancer is confined to the cervix. Often cured with surgery, or with radiation when preferred. |
| Stage II | Spread just beyond the cervix to the upper vagina or surrounding tissue, but not to the pelvic wall. |
| Stage III | Reached the lower vagina or pelvic wall, or involves pelvic lymph nodes. Treated with combined chemo and radiation. |
| Stage IV | Spread to the bladder or rectum, or to distant organs. Treated with combinations of radiation, chemotherapy, and immunotherapy. |
The standard of care
Cervical Cancer is almost always treated by a team that may include a surgeon, a medical oncologist, and a radiation oncologist, combining therapies for the best result. The usual building blocks are:
Surgery (early stage)
For small, early cancers, removing the cancer — sometimes with fertility-sparing options — or a hysterectomy can be curative.
Chemoradiation
For most stage II-IV cancers, daily radiation combined with chemotherapy, followed by brachytherapy, is the standard curative treatment.
Brachytherapy & systemic medicine
Internal radiation (brachytherapy) is an essential part of cure; immunotherapy and targeted drugs are added for advanced or recurrent disease.
How radiation treatment works
Radiation uses focused high-energy x-rays to damage cancer-cell DNA so the cells can no longer divide. Cervical cancer treatment combines external-beam radiation, which covers the cervix and pelvic lymph nodes, with brachytherapy, which places the radiation source right inside the tumor for a powerful local dose while sparing surrounding organs. Treatments are painless and brief; side effects can include temporary bladder and bowel changes, fatigue, and vaginal dryness, which the care team helps manage during and after treatment.
The main ways radiation is delivered for cervical cancer:
External-beam radiation (IMRT/IGRT)
Treats the cervix, uterus, and pelvic lymph nodes over about five weeks, shaping the dose to spare the bladder and bowel, usually alongside weekly chemotherapy.
Image-guided brachytherapy
Places a radiation source directly within the cervix and uterus, delivering a very high, precise dose to the tumor. It is a critical, cure-defining step that cannot be skipped without lowering success.
Concurrent chemoradiation
Low-dose chemotherapy given during radiation makes the cancer more sensitive to it, significantly improving cure rates for locally advanced disease.
Latest studies shaping care
Care keeps improving — often toward getting the same excellent results with less burden on patients. A few developments:
Adding immunotherapy improves cure: Adding immunotherapy to standard chemoradiation improved survival for locally advanced cervical cancer, a major advance after years without change.[1]
KEYNOTE-A18 / ENGOT-cx11
Induction chemotherapy before chemoradiation: A short course of chemotherapy before standard chemoradiation reduced recurrence and improved survival in locally advanced disease.[2]
INTERLACE trial
HPV vaccination prevents cancer: Population data confirm HPV vaccination dramatically reduces pre-cancers and cervical cancer, putting elimination of the disease within reach.[3]
England and Scotland national HPV vaccine cohorts
Common questions
Can cervical cancer really be prevented? To a remarkable degree, yes. The HPV vaccine prevents most of the infections that cause it, and regular screening finds and treats pre-cancer before it becomes cancer. Together they make cervical cancer one of the most preventable cancers.
Why is brachytherapy so important? Internal radiation delivers a high dose right where the tumor is, and studies show skipping it lowers cure rates. For most cervical cancers treated with radiation, it is an essential part of the plan.
Will treatment affect my ability to have children? It can, depending on stage and treatment. For very early cancers, fertility-sparing options may exist — so if having children matters to you, raise it with your team before treatment begins.
References
Numbered sources for the studies cited above. Links open the primary publication on PubMed or the publisher’s site.