Colposcopy: does it hurt, how to prepare, what the result means
A referral for colposcopy almost always follows an abnormal smear, and the fear comes not from the procedure but from what it implies. Here it is in order: what happens at the appointment, what it feels like, and what the words in the report actually mean.
What the examination is
A colposcope is essentially a microscope with a bright light that stands beside the chair — it does not go inside. The doctor looks through it at the cervix magnified 10 to 40 times. The only thing that goes inside is an ordinary speculum, the same as at a routine examination.
The point is that cytology says abnormal cells are present but not where. Colposcopy shows the place: the doctor sees the area a biopsy would be taken from, instead of taking one blindly.
The whole thing takes 10 to 20 minutes.
Does it hurt
Looking through the colposcope cannot be felt at all — it is a view from the outside. What can be felt is everything else:
- the speculum — as at any routine examination: uncomfortable, not painful;
- the acetic acid solution applied to the cervix — a mild sting or burn for a few seconds. This is the most noticeable sensation of the whole procedure;
- Lugol’s iodine — not felt;
- a biopsy, if one is needed — a brief cramp much like a strong period pain, lasting a second or two. Anaesthesia is not usually necessary, but it can always be arranged in advance.
The cervix has almost no pain endings, so what hurts is not the place the sample is taken from but the uterus contracting in response. The same thing helps as with period pain: a painkiller an hour before the appointment, if you know a biopsy is likely.
How to prepare
- Not during your period. The best window is days 8 to 14 counting from the first day of bleeding: the mucus is clear then and does not obscure the view.
- For 24 to 48 hours before — no intercourse, tampons, douching, pessaries or vaginal creams.
- Bring your cytology and HPV test results, and any previous colposcopy reports: a comparison with last time means more than a single image.
- After menopause the day of the cycle does not apply; topical estrogen is sometimes prescribed for a few days beforehand so the tissue can be seen better.
How it is done
- The doctor inserts a speculum and examines the cervix in ordinary light.
- Applies 3–5% acetic acid. It reveals areas of abnormal cells, which turn white because they contain more protein. Hence the term “acetowhite epithelium”.
- Applies Lugol’s iodine. Healthy epithelium stains dark brown; abnormal tissue stays pale. This is Schiller’s test.
- If needed, takes a biopsy — a tiny fragment of tissue from the most suspicious area, sometimes from several places.
Colposcopy does not make the diagnosis by itself — it shows where to look. Only histology, the examination of the sample under a microscope, gives the definitive answer.
What the words in the report mean
| What is written | What it means |
|---|---|
| Adequate / inadequate colposcopy | whether the border between the two types of epithelium is visible. If it is not (common after menopause), the examination is limited and a different approach may be needed |
| Normal colposcopic appearance | no abnormality |
| Acetowhite epithelium | an area turned white after acetic acid. Not a diagnosis on its own: it also happens during healing and with inflammation |
| Mosaic, punctation | a vascular pattern typical of epithelial change. Fine patterns suggest low-grade change, coarse ones more marked change |
| Atypical vessels | the most concerning sign; a biopsy is required |
| Minor / major change (grade 1, grade 2) | the presumed severity before histology |
| Transformation zone type 1, 2, 3 | how deep in the canal the border between epithelia lies. It affects the choice of method if treatment turns out to be needed |
Histology answers in different terms: LSIL (CIN 1) is low-grade change, which resolves on its own in more than half of cases and is usually simply observed. HSIL (CIN 2–3) is high-grade change, which is treated, most often with a loop excision — a fifteen-minute outpatient procedure.
Neither is cancer. These are precancerous changes — they are found precisely so that cancer does not develop. The path from HSIL to cancer takes years, which is exactly why screening works.
When colposcopy is arranged
- cytology reported as ASC-US or above, LSIL, HSIL, AGC;
- a positive high-risk HPV test, particularly types 16 and 18;
- a visible change on the cervix at examination;
- bleeding after intercourse;
- follow-up after treatment of cervical changes.
The “erosion” often found at an examination is usually ectopy — a normal state in which epithelium from the canal extends onto the outer surface. Many young women have it and it needs no treatment. Colposcopy exists precisely to tell this apart from genuine change, rather than cauterising an “erosion” blindly.
In pregnancy, and after the procedure
Colposcopy in pregnancy is permitted and safe: neither the speculum nor the acetic acid nor the light harms the baby. A biopsy is taken only where suspicion is serious, and the decision about treatment is usually deferred until after delivery — the changes do not have time to progress, and some resolve on their own afterwards.
After a biopsy there may be spotting or a dark discharge for a few days, which is normal. Intercourse, tampons, swimming pools, saunas and hot baths are avoided for a week. The histology result is usually ready in 7 to 14 days.
Short answers
Does a colposcopy hurt?
The examination itself cannot be felt — the colposcope does not go inside. You feel the speculum, as at any routine examination, and a mild sting from the acetic acid for a few seconds. A biopsy, if one is needed, gives a brief cramp similar to period pain.
Which day of the cycle is best for a colposcopy?
Days 8 to 14 counting from the first day of your period. It is not done during bleeding. After menopause the day does not matter.
How should I prepare for a colposcopy?
Avoid intercourse, tampons, douching and vaginal pessaries for a day or two beforehand. Bring your cytology and HPV results and any previous colposcopy reports.
Can a colposcopy be done during pregnancy?
Yes, it is safe at any stage. A biopsy is taken only where suspicion is serious, and treatment of any changes is usually deferred until after delivery.
How long does a biopsy result take?
Histology is usually ready in 7 to 14 days. The colposcopy report itself you receive immediately after the appointment.
This text describes the general picture and does not replace a consultation. Timings and indications differ from woman to woman and are decided at the appointment, from your history and test results.
