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What is CIN 2 and how should it be treated?

Author

Matthew Martinez

Updated on February 28, 2026

What is CIN 2 and how should it be treated?

CIN 2 is not cancer, but may become cancer and spread to nearby normal tissue if not treated. Treatment for CIN 2 may include cryotherapy, laser therapy, loop electrosurgical procedure (LEEP), or cone biopsy to remove or destroy the abnormal tissue. CIN 2 is sometimes called high-grade or moderate dysplasia.

Likewise, can CIN 2 go away on its own?

Moderate cervical lesions -- formally known as cervical intra-epithelial neoplasia grade 2 (CIN2) -- are abnormal cells on the surface of the cervix. But some studies have suggested that CIN2 lesions often regress completely without treatment and should therefore be simply monitored instead.

Secondly, what is the difference between CIN 1 and CIN 2? Low-grade neoplasia (CIN 1) refers to dysplasia that involves about one-third of the thickness of the epithelium. CIN 2 refers to abnormal changes in about one-third to two-thirds of the epithelial layer. CIN 3 (the most severe form) describes a condition that affects more than two-thirds of the epithelium.

Moreover, how long does it take for CIN 2 to develop into cancer?

However, it is estimated that 5% of CIN 2 and 12% of CIN 3 cases will progress to invasive cancer if untreated. In general, it takes 10 to 20 years for CIN to progress to cancer, allowing a significant time period for detection and treatment. Progression from CIN to cancer requires persistent HPV infection.

How bad is cin2?

Introduction. High-grade cervical intraepithelial neoplasia (CIN) is considered a precursor lesion to the development of invasive cervical cancer 1. There is evidence that the risk for progression of a CIN2–3 lesion to microinvasive cancer is less than 10 % with estimated time intervals ranging from 10 to 25 years 3.

Is cin2 precancerous?

CIN – The outer surface of the cervix is composed of cells called squamous cells. A precancerous lesion affecting these cells is called CIN. These changes are categorized as being mild (CIN 1) or moderate to severe (CIN 2 or 3).

What are the chances of CIN 2 returning?

In the first 6 years after treatment, the cumulative rate of CIN 2 or 3 in this group was: 14.0% in women originally treated for CIN 3. 9.3% in women originally treated for CIN 2. 5.6% in women originally treated for CIN 1.

Is CIN 4 a cancer?

About 6 in every 10 people have abnormal cells in their cervix – known as cervical intra-epithelial neoplasia (CIN) or cervical glandular intra-epithelial neoplasia (CGIN). This is not cancer, but there's a risk it could turn into cancer if untreated.

What is the treatment for CIN 1?

The clinical management of women with CIN 1 lesions may take one of the following courses: (i) immediate treatment or (ii) follow the woman and then treat if the lesion is persistent or progressive after 18 to 24 months. All women with CIN 2 and CIN 3 lesions should be treated with cryotherapy or LEEP.

Is cin2 contagious?

Cervical cancer only affects women/girls. It is not contagious and cannot be passed on to other people. These abnormal cells are not cancerous, and are called cervical intra-epithelial neoplasia (CIN). CIN may also be referred to as dysplasia or dyskaryosis.

What causes cin2?

There are several risk factors for cervical dysplasia, some of which relate directly to the risk of HPV:
  • having an illness that suppresses the immune system.
  • being on immunosuppressant drugs.
  • having multiple sexual partners.
  • giving birth before the age of 16.
  • having sex before the age of 18.
  • smoking cigarettes.

What does CIN 3 mean?

CIN 3. Severely abnormal cells are found on the surface of the cervix. CIN 3 is usually caused by certain types of human papillomavirus (HPV) and is found when a cervical biopsy is done. If not treated, these abnormal cells may become cancer and spread to nearby normal tissue.

Is HPV a STD?

HPV is the most common sexually transmitted infection (STI). HPV is a different virus than HIV and HSV (herpes). 79 million Americans, most in their late teens and early 20s, are infected with HPV. There are many different types of HPV.

What is the treatment for CIN 2?

Treatment for CIN 2 may include cryotherapy, laser therapy, loop electrosurgical procedure (LEEP), or cone biopsy to remove or destroy the abnormal tissue. CIN 2 is sometimes called high-grade or moderate dysplasia. Also called cervical squamous intraepithelial neoplasia 2.

Is HPV contagious for life?

HPV is highly contagious and is spread through close contact, including sexual contact. It is estimated that most sexually active people will become infected with HPV at some point. HPV infection typically does not cause signs or symptoms. In most cases, HPV infection goes away on its own, without long-term problems.

What is the difference between CIN 2 and CIN 3?

Low-grade neoplasia (CIN 1) refers to dysplasia that involves about one-third of the thickness of the epithelium. CIN 2 refers to abnormal changes in about one-third to two-thirds of the epithelial layer. CIN 3 (the most severe form) describes a condition that affects more than two-thirds of the epithelium.

Does CIN 3 Go Away?

CIN 1 – it's unlikely the cells will become cancerous and they may go away on their own; no treatment is needed and you'll be invited for a cervical screening test in 12 months to check they've gone. CIN 3 – there's a high chance the cells will become cancerous and treatment to remove them is recommended.

Does your cervix grow back after LEEP?

The tissue is cut from the opening up into the canal. This may be done with a small knife, an electric wire (LEEP), or with a laser. The removed tissue is then sent to the laboratory. New tissue grows back in the cervix in four to six weeks.

Can abnormal cells come back after LEEP?

Usually you can have more laser treatment or a LLETZ. You may need to have a cone biopsy. But if the abnormal cells come back more than once, or if your doctor thinks the risks are too great, they may ask you to have a hysterectomy. This is to prevent you from developing cancer of the cervix in the future.

What percent of people with HPV get cancer?

Number of HPV-Attributable Cancer Cases per Year
Cancer siteAverage number of cancers per year in sites where HPV is often found (HPV-associated cancers)Percentage probably caused by any HPV typea
Male15,54072%
TOTAL43,99979%
Female24,88683%
Male19,11374%

Can cin3 clear on its own?

CIN 1 lesions generally clear up on their own. So we treat all women with CIN 2 or 3 as if they are likely to develop cancer,” Harper says. The study enrolled 192 women diagnosed with CIN2 or CIN3, randomizing 129 to receive the vaccine and 63 to receive a placebo.

Can abnormal cells come back?

What happens if abnormal cells come back. Usually you can have more laser treatment or a LLETZ. But if the abnormal cells come back more than once, or if your doctor thinks the risks are too great, they may ask you to have a hysterectomy. This is to prevent you from developing cancer of the cervix in the future.

How long does it take for cin1 to turn into cin2?

In general, it takes 10 to 20 years for CIN to progress to cancer, allowing a significant time period for detection and treatment. Progression from CIN to cancer requires persistent HPV infection.

Can you get pregnant on cin2?

A doctor explains that, although there is a small risk of miscarriage and premature labour after treatment for CIN / CGIN, most women go on to have successful pregnancies. A loop excision for CIN doesn't affect the ability to get pregnant.

How common is Cin?

How common is CIN? About 250,000 to 1 million women in the U.S are diagnosed with CIN each year. The condition is found more often among women of childbearing age, particularly among women aged 25 to 35.

What does it mean if I have CIN 1?

CIN 1 is usually caused by certain types of human papillomavirus (HPV) and is found when a cervical biopsy is done. CIN 1 is not cancer and usually goes away on its own without treatment. Sometimes it becomes cancer and spreads to nearby normal tissue. CIN 1 is sometimes called low-grade or mild dysplasia.

How painful is a colposcopy?

A colposcopy is nearly pain-free. You might feel pressure when the speculum goes in. It might also sting or burn a little when they wash your cervix with the vinegar-like solution. If you get a biopsy, you might have some discomfort.

What are the stages of cervical dysplasia?

Cervical dysplasia that is found on a biopsy is called cervical intraepithelial neoplasia (CIN). There are 3 levels: CIN I (mild dysplasia) CIN II (moderate to marked dysplasia)

How serious is cin3?

CIN 3 is usually caused by certain types of human papillomavirus (HPV) and is found when a cervical biopsy is done. If not treated, these abnormal cells may become cancer and spread to nearby normal tissue. CIN 3 is sometimes called high-grade or severe dysplasia.

How is CIN diagnosed?

Since CIN usually does not cause any symptoms, a Pap smear is needed to find abnormal cells. The doctor will look through colored lenses to see whether there are any abnormal cells on the cervix or vaginal walls. A biopsy may be performed to remove tissue samples for examination in a laboratory.

What are the chances of CIN 3 returning?

More than 90% of infections are spontaneously cleared by the immune system within one year without treatment. Approximately 60% of CIN 1 lesions regress without treatment and less than 1% progress to cancer. However, it is estimated that 5% of CIN 2 and 12% of CIN 3 cases will progress to invasive cancer if untreated.

Why do I need a second colposcopy?

A Pap test is just a screening tool, while a colposcopy is a diagnostic procedure. So if, on a repeat Pap, your cells are still mildly abnormal or you still have high-risk HPV cells, you may need to repeat your colpsocopy to detect any changes to the cervical cells and confirm that you don't have cancerous cells.

What happens when they remove your cervix?

It involves the surgeon removing lymph nodes in the pelvis and examining them for cancer cells. If no cancer cells are found in the lymph nodes, the surgeon removes the cervix, part of the vagina, and some surrounding tissue. They will likely put in place a stitch to hold the uterus and vagina together.

When should a LEEP be done?

Why might I need a LEEP? LEEP may be done when cervical or vaginal problems are found during a pelvic exam, or abnormal cells are found during a Pap test. LEEP is also done to detect cancer of the cervix or vagina. Cells that appear to be abnormal, but are not yet cancerous, may be called precancerous.

Is moderate dysplasia serious?

But moderate-to-severe cervical dysplasia -- and mild cervical dysplasia that persists for two years -- usually requires treatment to remove the abnormal cells and reduce the risk of cervical cancer.

Can cin1 turn into cin2?

A CIN1 is associated with a risk of evolution to a CIN2 or more severe lesion that is not markedly more important than the risk associated with a LSIL/ASC-US pap smear while the colposcopy is normal or the biopsy is negative (between 8 and 13% whatever the results of the initial colposcopy) (LE 2/3).

Can a male have cervical lesions?

Penile lesions are frequently found in sexual partners of women with CIN [35,39]. Regression of penile lesions is significantly slower in men whose partners are infected with the same HPV type [79]. There is also evidence supporting the role of men in cervical cancer.

How effective is the LEEP procedure?

The bottom line
The LEEP is a safe and effective way to remove abnormal cells from the cervix, which could turn into cancer. There is rarely an impact on fertility and pregnancy after a LEEP. But you should always discuss any concerns you have with your doctor.

What is high grade dysplasia on the cervix?

Cervical dysplasia isn't cancer. The term indicates that abnormal cells were found on the surface of the cervix. On the Pap test report, this will be reported as a low- or high-grade squamous intraepithelial lesion (SIL) or sometimes as atypical squamous or glandular cells. Dysplasia could go away on its own.

What does Cin mean?

Cervical intraepithelial neoplasia (CIN), also known as cervical dysplasia, is the abnormal growth of cells on the surface of the cervix that could potentially lead to cervical cancer. More specifically, CIN refers to the potentially precancerous transformation of cells of the cervix.