Precise conservative treatment of benign or pre-neoplastic cervical lesions. Preserves cervical architecture and fertility, alternative to conisation for superficial lesions.
CO₂ laser ablation in the operating theatre under your choice of local or general anaesthesia, as a day case, home the same day. The cervix is preserved in its entirety — no shortening, no risk for future pregnancies.
Paris 8th practice · Clinique Hartmann Neuilly · Sector 2 non-OPTAM
CO₂ laser ablation is a treatment that destroys the lesion on the cervix by vaporising it. A highly focused, very precise light beam instantly turns the abnormal tissue into vapour, under continuous visual control through the colposcope (a kind of powerful magnifier). Unlike a conisation, which removes a fragment of cervix that can then be analysed under the microscope, laser destroys without sampling anything — which is why this technique is reserved for lesions whose diagnosis is already firmly established beforehand.
The CO₂ laser operates at a power of 10 to 20 Watts. The depth of destruction must be at least 5 mm, according to French guidelines (SFCPCV — French Society for Colposcopy) — this depth is needed to reach the small glands inside the cervix and completely eliminate the transformation zone, where HPV lesions typically develop.
The procedure is performed through the vagina — no scar, no incision. It takes 10 to 20 minutes. The anatomy of the cervix is preserved — a major advantage compared to conisation for young women planning pregnancy, since the cervix is not shortened.
CO₂ laser can technically be performed under local or general anaesthesia. Dr Zeitoun offers both, exclusively in the operating theatre at Clinique Hartmann — never in clinic or consultation. Local anaesthesia allows a quick return home, but can be uncomfortable: it's hard to stay perfectly still during the procedure, which can complicate the surgeon's work, and the sensation of heat or small spasms can be unpleasant. Short general anaesthesia on the other hand guarantees perfect immobility, total comfort, and safely ensures the 5 mm depth recommended by guidelines. After discussion, many patients choose this option for maximum comfort.
The CO₂ laser has precise and well-defined indications. It is offered for lesions where the diagnosis is already firmly established by colposcopy and biopsy, and where we can accept destroying the tissue without keeping a sample for analysis. Any more serious or suspicious lesion requires conisation, not laser.
This is the main indication for laser, according to French guidelines. When a low-grade dysplasia (CIN 1) does not clear up on its own after 18 to 24 months — even though it was expected to regress — laser treatment may be proposed in a young woman. The key advantage: treating the lesion without shortening the cervix, which protects your future pregnancies.
An ectropion is a small overflow, onto the visible part of the cervix, of a fragile red tissue that should normally stay inside the cervix. When it bleeds at the slightest contact — typically after intercourse — and local treatments have not worked, the CO₂ laser can remove this fragile zone and allow a normal, sturdier pink tissue to grow back in its place.
Condylomas — small genital warts caused by the HPV virus — located on the cervix respond particularly well to laser treatment. The precision of the beam, down to 1 millimetre, destroys visible warts while preserving the healthy tissue around them. Healing is quick and of excellent quality.
When several small abnormal areas of low severity are present at the same time on the visible part of the cervix, and they are clearly identified during colposcopy, the laser can treat each area in a targeted way, without removing a large portion of the cervix. It is often the preferred option for young women planning to have children.
CO₂ laser is never offered in the following situations: a moderate or high-grade dysplasia (CIN 2 or CIN 3 — which requires microscopic analysis to make sure nothing more serious is hidden underneath), an early glandular cancer (adenocarcinoma in situ, or AIS), any lesion that could extend inside the cervical canal (an area not visible at colposcopy), or even the slightest suspicion that the lesion has started to spread into nearby tissue. In all these cases, conisation is required. Pregnancy is also an absolute contraindication (major risk of bleeding and contractions).
CO₂ laser ablation is a day-surgery procedure performed exclusively in the operating theatre at Clinique Hartmann — never in clinic or consultation. The procedure itself lasts 10 to 20 minutes. Depending on your chosen anaesthesia (local or short general), you arrive in the morning and go home the same day, on average 2 to 4 hours after admission.
Dr Zeitoun offers both modalities, always in the operating theatre at Clinique Hartmann. Local anaesthesia is quick and allows discharge within the hour — but can be uncomfortable: the patient must remain perfectly still despite a sensation of heat and sometimes small spasms. For small, well-defined lesions in non-anxious patients, it is a good option. Short general anaesthesia guarantees perfect immobility and maximum comfort — particularly indicated for extensive lesions, anxious patients, or when safely ensuring the 5 mm depth recommended by SFCPCV. The choice is made together with you during the pre-operative consultation.
The choice depends first and foremost on your biopsy result. CO₂ laser destroys the tissue without leaving anything to analyse — so it is reserved for lesions where the diagnosis is already certain and where vaporising everything is acceptable (persistent CIN 1, ectropion, condylomas). Conisation, on the other hand, removes a piece of cervix which is then analysed under the microscope — this is essential for more advanced lesions (CIN 2/3, AIS) where we need to check that the margins are clear and that no cells have started to spread to nearby tissue. The two techniques are not competitors: they are complementary, each with its own place depending on the situation.
Recovery after CO₂ laser is remarkably simple. Most patients experience no post-operative pain. Some describe transient discomfort similar to period pain for 2 to 3 days, relieved by paracetamol. Cervical healing is rapid thanks to the particular quality of the laser wound — less inflammatory than with other techniques.
Yellow or pink discharge for 2 to 3 weeks, sometimes more abundant in a moist environment. It indicates healing and should not cause concern. It gradually disappears.
Between the 8th and 10th day, the scab falling off may cause a small transient bleeding. This is an expected physiological phenomenon. Stay close to a medical centre for 15 days.
Wait 3 weeks after laser before resuming sexual activity. This rule limits the risk of infection and secondary bleeding from eschar detachment.
No intense sport for 15 days. Gentle walking allowed from the next day. Avoid long-distance travel the first week.
No baths or swimming for 3 weeks. Showers allowed without restriction. No tampons or menstrual cups for 3 weeks — pads only.
Time off work is not systematic. Recovery is very simple — many patients resume activity the next day for sedentary work. A few days may be useful for physical jobs or after a GA.
If complications arise after the procedure: heavy bleeding (exceeding a period), fever > 38 °C, intense pelvic pain, persistent dizziness or fainting require prompt medical attention. Go to the emergency department at Clinique Hartmann, or to the nearest gynaecological emergency unit.
This is a major advantage of CO₂ laser over conisation. Laser ablation does not compromise fertility and does not modify cervical anatomy. Unlike conisation which removes a fragment that can shorten the cervix, CO₂ laser destroys the surface lesion without removing structural tissue — the cervix retains its length and mechanical competence.
Available obstetric studies show no significant increase in preterm birth risk after isolated laser treatment of the cervix. This is one of the main arguments for laser — when indication allows — in young women with pregnancy plans, compared to conisation which, even calibrated to minimum, carries a slight over-risk of prematurity.
In practice, for a patient planning to have children: CO₂ laser is very often the preferred option for young women, when the biopsy result allows (persistent CIN 1, ectropion, condylomas). Dr Zeitoun systematically discusses this choice with you in consultation, weighing the advantages and the drawbacks of each technique: laser (no analysis possible but the cervix is fully preserved) versus conisation (microscopic analysis is possible but a small added risk for future pregnancies).
Cervical CO₂ laser is strictly contraindicated during pregnancy. Thermal effect on a cervix hypervascularised by pregnancy can cause major bleeding and trigger uterine contractions — with risk of miscarriage or preterm birth. If a lesion is discovered during pregnancy, the decision is postponed until after delivery and uterine involution. Laser can however be performed on the vulva or vagina during pregnancy, if necessary.
There is no imposed delay after an uncomplicated laser. Most practitioners recommend waiting 2 to 3 months — time to verify healing by a first check-up and organise post-operative follow-up (smear + HPV test at 3-6 months). A pregnancy starting before this delay is not at particular risk, and will be followed normally.
Post-laser follow-up is particularly important for a simple reason: since tissue was destroyed rather than removed, there is no definitive histological analysis. Surveillance by smear and HPV test is therefore the only way to verify that treatment was effective and that there is no residual lesion.
If the first check-up at 3-6 months reveals an anomaly (suspicious smear or positive HPV test), a colposcopy with biopsies is immediately performed to characterise the residual or recurrent lesion. Depending on the results, a second treatment may be proposed — new laser if the lesion remains low-grade, or conisation if a high-grade lesion appears. This recurrence possibility justifies the critical importance of close follow-up.
CO₂ laser is a safe, minimally invasive technique with a very low complication rate. Risks are rare but must be known — Dr Zeitoun explains each risk in pre-operative consultation, this information being both a legal obligation and an essential part of shared decision-making.
Heavy bleeding may occur between the 8th and 10th day, when the healing scab falls. Usually managed by simple compression or vaginal packing. Exceptionally (< 1%), hospitalisation or return to theatre may be required. It is advised to stay close to a medical centre for 15 days.
Much rarer than after conisation. Scarring narrowing of the external cervical opening that may cause painful periods or interfere with follow-up. Risk is higher in postmenopausal women. Treatment: simple dilation at the clinic.
Risk of recurrence or new lesion, mainly linked to HPV persistence. Higher in case of insufficient depth of destruction, multifocal lesion, or active smoking. This is why close follow-up is essential, even after an apparently successful procedure.
Rare endometritis or pelvic infection. Presents with fever, pelvic pain, malodorous discharge. Treated with targeted antibiotics after swab. Compliance with post-operative instructions (no baths, no intercourse for 3 weeks) is the best prevention.
The main limitation of the CO₂ laser: we cannot analyse what we destroy. Unlike conisation, no tissue is recovered for microscopic analysis. This is a choice we accept only when the diagnosis is already well established on the biopsies done before the procedure. In return, this requires attentive surveillance afterwards — because if a more serious lesion had been underestimated before the laser, it would only be revealed at later follow-ups. This follow-up commitment is a mutual agreement between surgeon and patient.
Smoking significantly increases the risk of healing complications (delayed healing, bleeding) and especially the risk of HPV lesion persistence and recurrence. Stopping smoking 6 to 8 weeks before the procedure improves long-term prognosis. Tabac Info Service (3989) offers free support in France.
Dr Zeitoun reviews your smear results, your HPV typing and your biopsy reports with you, from the very first consultation. You leave with a clear treatment plan, without pressure or urgency — and the certainty that the chosen technique is the most appropriate for your situation and your plans.
Paris 8th practice · Clinique Hartmann Neuilly · Sector 2 non-OPTAM · Second opinions welcome
The answers below are based on SFCPCV, INCa and HAS guidelines, as well as recent medical literature. Each question is frequently asked in consultation — this section is regularly updated.
No. Under general anaesthesia, the procedure is entirely painless. Under local anaesthesia, you may feel a sensation of heat and occasional small spasms — uncomfortable but tolerable for small lesions. Recovery, whatever the anaesthesia, is minimally uncomfortable: most patients experience no pain, sometimes transient discomfort similar to period pain for a few days. Paracetamol is sufficient. Yellow or pink discharge for 2 to 3 weeks is normal and indicates healing.
Dr Zeitoun offers both modalities, always in the operating theatre at Clinique Hartmann — never in clinic. Local anaesthesia allows rapid discharge and suits small, well-defined lesions in non-anxious patients — but can remain uncomfortable (difficulty staying still, sensation of heat, small spasms). Short general anaesthesia guarantees absolute comfort and perfect immobility — preferred for extensive lesions, anxious patients, or when safely ensuring the 5 mm depth recommended by SFCPCV. The choice is made together with you during the pre-operative consultation.
Yes, and this is even a major advantage of laser over conisation. CO₂ laser does not remove structural tissue and therefore does not shorten the cervix — unlike conisation. Obstetric studies show no increase in preterm birth risk after isolated laser treatment. This is why laser is often preferred in young women with pregnancy plans, when the indication allows.
Laser destroys the abnormal tissue by vaporising it — fast, precise, but without sampling. No microscopic analysis is then possible. It is indicated for persistent CIN 1, ectropion, condylomas. Conisation removes a cone-shaped piece of cervix — microscopic analysis then confirms the diagnosis, checks the margins, and makes sure no cells have started to spread. It is indicated for CIN 2, CIN 3, or an early glandular cancer (AIS). The choice between the two depends on the exact severity of the lesion and on your pregnancy plans.
These are the three grades of precancerous cervical lesions called dysplasias. CIN 1 (low grade): mild anomaly, spontaneously regressing in ~60% of cases — simple surveillance, then CO₂ laser if persistent beyond 18-24 months. CIN 2 (intermediate grade): treatment discussed based on age, most often conisation. CIN 3 (high grade): severe anomaly systematically requiring conisation.
Significant bleeding affects 1 to 2% of patients, typically between the 8th and 10th day when the healing eschar falls. Usually controlled by simple compression or vaginal packing at the clinic. Exceptionally (< 1%), return to theatre may be necessary. Stay close to a medical centre for 15 days. Moderate period-like bleeding is however normal and may last 8 to 10 days.
Time off work is not systematic. Recovery is very simple, and many patients resume activity the next day for sedentary work. A few days of rest may be useful for physical jobs, heavy lifting, or after a GA. Any sick leave is discussed individually in pre-operative consultation and adapted to your situation.
Yes, but you need to wait 3 weeks after laser. This rule is essential: during healing, intercourse increases infection risk and can cause eschar-related bleeding. After this period, sexual activity resumes normally, with no impact on pleasure or function — cervical anatomy is fully preserved.
Dr Zeitoun practises in sector 2 non-OPTAM: additional fees apply, including for ALD (long-term condition) patients. The French National Health Insurance reimbursement base for cervical laser destruction (CCAM code JKND003) is covered, but fees charged are higher. Day surgery costs at Clinique Hartmann and anaesthesia fees are added. A detailed personalised quote is systematically provided after consultation — it allows your complementary health insurance to assess coverage. Out-of-pocket costs depend on your insurance level.
This page draws on recommendations from French and international medical societies, and on recent PubMed-indexed studies.
Last review of this page: 18 April 2026 · Next review scheduled: July 2026.
Dr Zeitoun receives you for a thorough examination, a full review of your file and the development of a personalised strategy. Paris 8th practice or Clinique Hartmann Neuilly. Second opinions on file are welcome.