How to Read a Smear Result: What Normal, Inflammation and Reactive Changes Mean
What do "normal", "inflammation" and "reactive changes" mean on a smear report? Sections of the report, atrophy, the transformation zone and when the next smear is due.
If you are holding a smear report that says "negative for intraepithelial lesion or malignancy," "inflammatory cell changes" or "reactive changes," your first reaction was probably worry. Yet most of these phrases mean, on the contrary, that no cancer or pre-cancerous change was found. This article explains the sections of a smear report, what the most common "non-cancer" findings mean and, if the result is clear, when the next test is due, in plain language. For the test itself, see our page on the smear test and HPV test in Antalya.
What Sections Does a Smear Report Have?
According to the widely used Bethesda system, a smear report has three main sections:
- Specimen type: It states whether the sample was spread on a glass slide in the conventional way or examined in a liquid (liquid-based cytology).
- Specimen adequacy: It shows whether the examination is reliable. "Satisfactory for evaluation" means the cells could be read clearly under the microscope. "Unsatisfactory" means that too much blood, heavy inflammation or too few cells made reading impossible; for details, see our article on unsatisfactory samples.
- Interpretation and result: This is the main section in which the cells are assessed. One of two main headings is written: "negative for intraepithelial lesion or malignancy" or "epithelial cell abnormality."
What Does "Negative for Intraepithelial Lesion or Malignancy" (NILM) Mean?
This phrase appears on reports as NILM for short. The epithelium is the layer of cells that covers the surface of the cervix (the neck of the womb); malignancy means cancer. So NILM means that no cancer, no pre-cancerous change and no suspicious cell damage was seen in the sample examined. This is the category we can describe as a "clear" or "normal" smear result.
If the report says "epithelial cell abnormality," the situation is different; we explained what these results mean and how follow-up is done in our article on the abnormal smear result.
Why Do Other Things Also Appear on an NILM Report?
Even when the result is clear, the reactions of the cells or the microorganisms in the surroundings may be added to the report. These are mostly not a disease but a trace of everyday life. The most common are:
Reactive (reparative) changes and "inflammation": Cervical cells can react to irritation, a mild infection, intercourse or a discharge and change shape for a while. The "inflammatory cell changes" or "reactive changes" on the report describe this. It does not mean that the cells are heading towards cancer; it shows that the tissue is repairing itself. If you have no complaint such as discharge, itching or burning, it does not need treatment on its own.
Atrophy (thinning and dryness): After menopause, when the hormone oestrogen falls, the layers of cells in the cervix and vagina become thinner. The report says "atrophic (thinned-cell) changes." If you have no complaint such as vaginal dryness, burning or spotting, no treatment is needed; if you do, treatment applied to the vagina containing oestrogen may be considered by your doctor. For details, see our article on genitourinary syndrome of menopause.
Changes related to an intrauterine device (coil): The light mechanical contact of a coil can cause small changes in cells. If there is no infection or bleeding, it does not require removing the coil or giving treatment. "Actinomyces-like organisms" on the report are also clusters of bacteria that can be seen especially in people who have used a coil for a long time; if you have no complaint such as fever, groin pain or foul-smelling discharge, it is usually not necessary to remove the coil or give antibiotics.
Radiation changes: These are changes seen in cells of people who have had radiotherapy in the past; they are not a sign of a new disease.
Endometrial cells (cells of the womb lining): These are cells shed from the lining of the womb. In samples taken close to the period, they can be usual in women who have periods. After menopause, or if there is abnormal bleeding, the lining of the womb may need to be assessed separately with methods such as ultrasound.
Metaplasia (benign change of cell type): This is when cervical cells change from one cell type to another during healing. It is benign and does not need treatment.
If a Microorganism Is Written on the Report
A smear is not an infection test, but some microorganisms can be seen under the microscope:
- Bacterial vaginosis (a shift in the flora): The protective bacteria in the vagina decrease and other bacteria become dominant. If there is foul-smelling discharge or itching, it is treated; if there is no complaint at all, treatment may not be necessary.
- Yeast (Candida): If there is itching and a cottage-cheese-like discharge, antifungal (anti-yeast) treatment is given. If there are no complaints, a yeast found by chance usually does not need treatment.
- Trichomonas: A small single-celled organism passed on through sexual contact. Even if you have no complaints, it needs to be treated together with your partner.
- Herpes: The typical trace that the cold-sore virus leaves in cells. If there is an active sore or a complaint, antiviral treatment is planned by the doctor.
For the assessment of discharge complaints, see our vaginal discharge page.
What Does "No Transformation Zone Component" Mean?
The area of the cervix where two different cell types meet is called the transformation zone. The great majority of cervical cancers and pre-cancerous changes develop in this area. For example, when enough cells could be collected, "transformation zone sampled" is written.
If the report says "no endocervical (belonging to the cervical canal) cells or transformation zone component," it means that the cells of this area could not be found in sufficient numbers in the sample. This is seen more often especially after menopause, because this meeting point moves up into the canal. In a person at average risk, if the result is NILM, this does not make the test invalid and does not require repeating the smear immediately; the next test is done at the interval suitable for the age. The decision belongs to your doctor according to your age and HPV test result.
If the Result Is Clear, When Is the Next Test?
The intervals vary by country and by guideline. In Türkiye, the Ministry of Health's national screening programme recommends an HPV-DNA test every 5 years between the ages of 30 and 65; for details, see our HPV page. In American guidelines (ACOG, ASCCP, USPSTF), the following approach is recommended for people at average risk:
- Under 21: Routine screening is not recommended.
- Ages 21–29: A smear alone every 3 years. Because temporary HPV infections are very common at these ages, routine HPV testing is not done.
- Ages 30–65: One of three options: a smear and an HPV test together (every 5 years if both are negative), an HPV test alone (every 5 years if negative) or a smear alone (every 3 years if negative).
- Over 65: Screening can be stopped in people who have had enough negative results in the last 10 years and have no history of a serious pre-cancerous change.
We explained the difference between a smear and an HPV test in a separate article. Ask your doctor about your own plan.
When Does "Inflammation" on the Report Matter?
Seeing white blood cells, that is, leukocytes, is usual in almost every vaginal and cervical sample. On its own it is not a sign of disease. The doctor acts in these situations:
- If there is a complaint such as foul-smelling or coloured discharge, itching, burning or groin pain, you are examined and treatment aimed at the cause is given.
- If the inflammatory cells have completely blocked the view of the cervical cells and the report comes out as "unsatisfactory," the smear is repeated about 2–4 months after the infection has been treated.
When Should You See a Doctor?
Even if your smear result is clear, see an obstetrician-gynaecologist without delay in the following situations, because a conventional smear does not always show diseases inside the womb:
- Bleeding after intercourse, bleeding between periods or any vaginal bleeding that starts after menopause
- Foul-smelling, yellow-green discharge, severe itching or pain during intercourse
- Lower abdominal pain that does not go away or a feeling of pressure in the groin
Frequently Asked Questions
My smear result says "inflammation." Could it be cancer?
"Inflammation" or "reactive change" does not point to cancer. It describes the reaction of the cells to temporary irritation or infection. If you have complaints, you are examined; if not, treatment is usually not needed.
My result is NILM. Do I still need an HPV test?
It depends on your age and the screening method you follow. In the Turkish programme, an HPV-DNA test is recommended every 5 years between the ages of 30 and 65. Your doctor decides the timing of your next test according to your results.
Is treatment a must for a yeast or flora shift on the report?
If you have no complaints, it is usually not needed; if you do, it is treated. When Trichomonas is found, however, treatment together with your partner is needed even without complaints.