Colposcopy After an Abnormal Pap: What Happens and What It Means

If you were called back after a Pap test or an HPV test, the most useful thing to know first is this: a colposcopy is a look, not a treatment, and an abnormal screening result is not a cancer diagnosis. Cervical cancer screening is designed to catch changes years — often a decade or more — before they could ever become cancer. Colposcopy is the step that tells us whether any of those changes are actually present on your cervix, and how significant they are.

Why a colposcopy gets ordered

Cervical screening does not diagnose anything on its own. A Pap looks at loose cells; an HPV test looks for the virus that causes nearly all cervical cancer. Either can suggest a problem without proving one.

You may be referred for colposcopy when:

• Your Pap shows ASC-US with a positive high-risk HPV test
• Your Pap shows LSIL, ASC-H, HSIL, AGC, or atypical glandular cells
• You test positive for HPV 16 or HPV 18 specifically, even with a normal Pap
• You have a persistent high-risk HPV infection across more than one screening round
• Your cervix looks abnormal on exam, or you have unexplained bleeding after intercourse

Current management follows risk-based guidance from ASCCP: the decision is not made on a single result in isolation, but on your current result combined with your screening history. That is why two women with the same Pap result can be given different advice — one may go straight to colposcopy, the other may be asked to repeat testing in a year. If you are unsure why yours was ordered, ask. The reasoning should be explainable in a sentence.

What happens during the exam

A colposcopy is done in the office and typically takes ten to fifteen minutes. It does not require anesthesia and you can drive yourself home.

1. You lie on the exam table as you would for a Pap, and a speculum is placed.
2. The colposcope — a lighted magnifying scope on a stand — is positioned outside your body, near the opening of the vagina. Nothing about it goes inside you.
3. A dilute vinegar solution (acetic acid) is applied to the cervix with a cotton swab. This may sting or feel cold for a few seconds. Abnormal cells turn white when the vinegar hits them, which is what makes them visible under magnification. Sometimes an iodine solution is used as well, which stains healthy tissue dark and leaves abnormal areas pale.
4. Using a green light filter, the cervix is examined for the specific vessel patterns that suggest higher-grade change.

If everything looks normal under magnification, no biopsy may be needed. In most referrals, at least one biopsy is taken.

The biopsy

A cervical biopsy is a small pinch of tissue — a few millimeters — taken from each abnormal-looking area with a fine instrument. Most women describe it as a strong menstrual cramp lasting a second or two. Taking ibuprofen about an hour before your appointment genuinely helps.

An endocervical curettage (ECC) may also be done. This samples the canal just inside the cervical opening, which the colposcope cannot see into. It feels like a deeper cramp for several seconds. ECC is not done during pregnancy.

A yellow-brown paste (Monsel's solution) is often applied to stop bleeding. It causes a dark, coffee-ground-looking discharge for a day or two, which surprises people if they are not warned about it.

What the results mean

The biopsy is read by a pathologist and graded by how much of the cervical lining thickness is affected. This is cervical intraepithelial neoplasia, or CIN.

• CIN 1 (low grade). Mild changes, essentially the visible signature of an active HPV infection. Most CIN 1 clears on its own as the immune system controls the virus. The usual approach is surveillance with repeat HPV-based testing rather than treatment.
• CIN 2 (moderate). A genuine precancer, but an unstable middle ground — a meaningful share of CIN 2 also regresses without treatment. In women under 25, and in some older women who want future pregnancies, observation with testing every six months for up to two years is an accepted option instead of immediate treatment.
• CIN 3 (high grade). The most advanced precancer, including carcinoma in situ. This is treated. Left alone over many years, a substantial proportion would progress to invasive cancer, and there is no reliable way to predict which.

Adenocarcinoma in situ (AIS) is a separate glandular precancer that is managed differently — it usually requires an excisional procedure rather than ablation, because it can be patchy and sit higher in the canal.

None of these grades means you have cancer. They describe how far a cell change has traveled down a road it may never finish.

Treatment options

Treatment removes or destroys the affected surface layer of the cervix so healthy tissue regrows in its place.

Excisional methods cut the tissue out and preserve it for the pathologist, which is their key advantage — the specimen confirms the diagnosis and shows whether the margins are clear.

• LEEP (loop electrosurgical excision procedure) uses a thin electrified wire loop to shave off the transformation zone. It is done in the office under local anesthetic, takes a few minutes, and is the most common treatment in the United States.
• Cold knife conization removes a cone of tissue with a scalpel in the operating room under anesthesia. It is chosen when the lesion extends up the canal, when AIS is suspected, or when cancer must be definitively ruled out.

Ablative methods destroy tissue in place and leave no specimen, so they are only appropriate when the colposcopy was fully satisfactory, the entire lesion was visible, and invasion has been excluded.

• Cryotherapy freezes the abnormal area with a probe. It causes a heavy watery discharge for two to three weeks.
• Thermal ablation and laser ablation achieve the same end with heat.

The preterm birth trade-off

This matters and deserves plain language. Excisional treatment of the cervix is associated with an increased risk of preterm birth, preterm premature rupture of membranes, and low birth weight in future pregnancies. The risk tracks with how much tissue is removed — deeper and repeated excisions carry more risk than shallow ones. Ablative treatment has not shown the same association.

That is not a reason to refuse treatment for CIN 3, where the cancer risk clearly outweighs the obstetric one. It is a reason to:

• Avoid treating CIN 1, which usually does not need it
• Consider observation for CIN 2 if you are young or planning pregnancy
• Have your provider remove no more tissue than the lesion requires
• Mention any prior cervical procedure at your first prenatal visit, so your prenatal care can account for it

If you have had a LEEP or cone and are planning a pregnancy, bring it up before you conceive, not after.

Recovery and follow-up

After a biopsy alone: light spotting and cramping for a day or two. Nothing in the vagina — no tampons, no intercourse, no douching — for about a week, or as instructed.

After LEEP or cryotherapy: a watery, sometimes dark or malodorous discharge for two to four weeks, and pelvic rest for about four weeks. Call promptly for heavy bleeding that soaks a pad an hour, fever, or severe pain.

Being treated does not end surveillance. HPV-based testing is repeated at six months, then at intervals for many years afterward, because the risk of recurrence stays elevated for decades. This is one of the few situations where long-term follow-up genuinely changes outcomes, and it is easy to drift away from. Keep your routine check-ups.

Cervicitis is a different thing entirely

Cervicitis means the cervix is inflamed. It is not precancer, it is not CIN, and it does not become cancer. People often land on the two topics together because both can cause an abnormal-looking cervix or spotting after sex, so it is worth separating them clearly.

Causes. The most common infectious causes are chlamydia and gonorrhea. Trichomonas, Mycoplasma genitalium, herpes simplex, and bacterial vaginosis can also cause it. A substantial number of cases are non-infectious: irritation from douching, spermicides, latex, a retained tampon, or a diaphragm or cervical cap. In postmenopausal women, thinning of the tissue from low estrogen can produce a fragile, easily irritated cervix.

Symptoms. Many women have none, and it is found on exam. When symptoms occur they include a grayish or yellow discharge, bleeding between periods, bleeding after intercourse, pain with sex, and urinary burning. On exam the cervix looks red and swollen and bleeds easily when touched.

Treatment. Testing for chlamydia, gonorrhea, and trichomonas comes first. Chlamydia is treated with doxycycline, gonorrhea with an injection of ceftriaxone, and trichomonas and bacterial vaginosis with the appropriate oral antibiotic. If your risk of an untreated sexually transmitted infection is high, treatment may be started before results return. Sexual partners need treatment too, or you will simply be reinfected. When no infection is found, the approach is to remove the irritant and, in postmenopausal women, consider local estrogen.

Untreated chlamydial or gonococcal cervicitis can ascend to cause pelvic inflammatory disease and tubal damage, which is one of the preventable causes of infertility. That is the real reason to test rather than wait it out.

Prevention

• Keep screening on schedule, even after HPV vaccination. Vaccination reduces risk; it does not remove the need for screening.
• HPV vaccination is recommended through age 26, and is available with shared decision-making from 27 to 45.
• Report abnormal bleeding — between periods, after sex, or any bleeding after menopause — rather than waiting for your next visit. See menstrual issues for context on what counts as abnormal.
• Do not skip follow-up after a treated lesion.

Dr. Adeeb Alshahrour performs colposcopy, biopsy, and LEEP at the Women's Health Center of Chicago. If you have an abnormal result and want it explained properly before anything is done, book a visit or see our locations.

Medical disclaimer

This article is for general education and does not replace individual medical advice. Cervical screening and colposcopy management depend on your specific results, your screening history, your age, and your plans for pregnancy. Do not use this information to decide for or against a procedure on your own — discuss your results with your clinician. If you have heavy vaginal bleeding, fever, or severe pelvic pain after a cervical procedure, seek medical care immediately.