Cervical Cancer Brachytherapy — What Actually Happens, Step by Step

Cervical cancer brachytherapy delivers internal radiation through an applicator placed inside the cervix and upper vagina, giving a high, targeted dose to the tumour bed while limiting dose to nearby organs. NCCN and ASTRO guidelines treat it as a standard part of curative-intent cervical cancer treatment, given after external beam radiation is complete.

Most patient information in India skips straight from "you'll need brachytherapy" to a list of side effects, without ever describing the day itself — which leaves a lot of unnecessary fear in the gap. This page walks through what actually happens, step by step, the way your radiation oncology team would explain it in the room, plus the bladder, bowel and sexual-health questions patients are often too embarrassed to ask out loud.

Your brachytherapy itself is delivered at an NABH-accredited partner centre; CION Cancer Clinics coordinates your treatment plan, your radiation oncology team and your care throughout, from planning to follow-up.

Yes — anaesthesia is standard for cervical brachytherapy placement, not optional. Most centres use general anaesthesia, spinal anaesthesia, or deep sedation, chosen based on your overall health, the planned session length, and your anaesthesia team's assessment. You will not be awake and in pain while the applicator is positioned.

Some soreness or cramping after the anaesthesia wears off is normal for a few hours to a day, similar to mild period cramps, and is managed with pain relief medicine your care team prescribes. Tell your nurse if pain feels more severe than expected — it's checked, not dismissed.

Most cervical cancer brachytherapy courses involve 3 to 5 sessions, typically spaced a few days to about a week apart, delivered after your course of external beam radiation is complete. Your radiation oncologist sets the exact number based on your tumour's size, response to treatment so far, and your overall treatment plan — it is individualised, not fixed for everyone.

Each session is a separate placement — the applicator is inserted fresh, checked with imaging, and removed afterward every time; nothing stays in place between visits. Compared to the daily external beam radiation sessions you may already be used to, brachytherapy visits are fewer but each takes longer, usually a half-day to full day including anaesthesia recovery.

Expect mild cramping, spotting or light vaginal discharge for a day or two after each session, along with grogginess from anaesthesia that clears within hours. Most patients rest at home the same evening and resume light daily activity within a day, though your team will give you specific guidance based on your session and anaesthesia type.

Some bladder urgency or looser stools can appear in the days after a session, since the bladder and rectum sit close to the treatment area — tell your team if either feels severe, lasts more than a few days, or comes with fever, as those aren't expected and should be checked. For manageable urgency or period-like cramping, your team will guide you on pain relief and simple diet adjustments — covered in more depth on our page on diarrhoea during pelvic radiation: diet and management.

Brachytherapy can cause vaginal narrowing (stenosis) and dryness over time, since the treated tissue can lose some elasticity — this is a recognised, manageable late effect, not an inevitable outcome, and your team will teach you dilator use and vaginal moisturising before it becomes a problem, not after. Sexual activity is not medically restricted long-term once you've healed from the acute treatment period; your team will tell you when it's appropriate to resume.

Because brachytherapy targets the cervix and uterus directly, it typically ends natural fertility, and this is discussed with you as part of treatment planning — before treatment starts, wherever your situation allows — so you can ask about the fertility-preservation options that may apply to your specific case. This is not something to guess about or discover afterward; raise it at your first consultation.

Our page on vaginal narrowing after pelvic radiation and how dilators are used covers the practical side of this in full detail, including when to start and what a dilator routine actually involves.

Bladder and bowel tissue near the treated area can become more sensitive over months to years, showing up as urgency, occasional leakage, looser stools, or mild bleeding in some patients — these are known, monitored effects of pelvic radiation, not something you're expected to manage alone. Your care team screens for these at every follow-up visit, specifically because embarrassment keeps many patients from raising them unprompted.

Pelvic floor physiotherapy, dietary adjustments and simple bladder-training techniques help many patients substantially, and are usually tried before anything more involved. Our page on brachytherapy pain and anaesthesia options goes deeper into what to expect and how discomfort is managed across the full course of treatment.