Uterine polyps – symptoms, diagnosis, and treatment according to international guidelines

Gynecological health is directly linked to a woman’s quality of life, reproductive functions, and overall peace of mind. One of the most common pathologies encountered by women at various stages of life is a uterine polyp (either an endometrial or cervical polyp).

Although the vast majority of these growths are benign, the symptoms they cause can trigger significant discomfort and anxiety. In this comprehensive guide, based on clinical data and research from leading global medical institutions—such as the Mayo Clinic, Harvard Health Publishing, Cleveland Clinic, and the Royal College of Obstetricians and Gynaecologists (RCOG)—we provide an exhaustive analysis of everything you need to know regarding the diagnosis, risks, and modern treatment methods for uterine polyps.

What is a uterine polyp?

A uterine polyp is a benign overgrowth of tissue that develops from the mucosal lining. Depending on their exact anatomical location, modern medicine strictly categorizes them into two distinct types:

• Endometrial Polyps – these develop within the uterine cavity from its inner lining—the endometrium. They can be attached to the uterine wall either by a broad base (sessile) or a thin stalk (pedunculated).
• Cervical Polyps – these form within the cervical canal—the passage connecting the uterus to the vagina. Experts from Harvard Health Publishing note that cervical polyps frequently appear as cherry-red, purplish, or greyish-white growths protruding on a thin stalk.

Uterine polyps can range in size from a few millimeters (the size of a sesame seed) to several centimeters. Their growth is directly influenced by hormonal fluctuations, particularly a heightened sensitivity to estrogen, the primary hormone responsible for stimulating the proliferation of the mucosal lining.

Key risk factors and causes

Clinical and scientific research has clearly defined the primary epidemiological factors that increase the likelihood of developing uterine polyps:

• Age and Hormonal Transitions – endometrial polyps most frequently affect women undergoing perimenopause or postmenopause (typically between the ages of 40 and 50). Conversely, as reported by Harvard Health, cervical polyps are relatively more common in women over the age of 20 who have had at least one pregnancy.
• Obesity (Elevated BMI) – an increased volume of adipose (fat) tissue leads to peripheral synthesis of additional estrogen. Chronically elevated estrogen levels directly stimulate excessive cellular proliferation within the endometrial lining.
• Tamoxifen Therapy – patients undergoing breast cancer treatment or prevention with Tamoxifen carry a significantly higher risk of developing endometrial polyps and endometrial hyperplasia.
• Chronic Inflammation – chronic inflammatory processes within the cervical canal or localized vascular congestion frequently serve as the underlying mechanism for the growth of cervical polyps.

Symptoms – when should you visit a gynecologist?

Approximately two-thirds of women with cervical polyps do not experience any noticeable symptoms. However, if the growth begins to interfere with normal tissue function or undergoes micro-trauma, the following clinical signs emerge:

• Intermenstrual Bleeding – any form of abnormal bleeding or spotting occurring between regular menstrual periods.
• Heavy Menstrual Bleeding (Menorrhagia) – periods become significantly heavier and prolonged due to the vascular nature of the polyp.
• Contact Bleeding – postcoital bleeding (spotting after sexual intercourse) or bleeding following a pelvic examination.
• Vaginal Discharge – cervical polyps can cause increased vaginal discharge, which may develop an unpleasant odor if a secondary bacterial infection occurs.
• Postmenopausal Bleeding – this is a critical warning sign. As emphasized by Dr. Ross Berkowitz, a professor at Harvard Medical School, any bleeding after menopause must be evaluated immediately. While more than 90% of women diagnosed with uterine cancer initially present with postmenopausal bleeding, the vast majority of cases are ultimately caused by benign conditions, such as polyps.

Diagnosis and differential diagnosis

To ensure an accurate diagnosis and differentiate polyps from other structural abnormalities, international standards (including Cleveland Clinic and ACOG guidelines) mandate a multi-stage diagnostic approach:

Speculum examination

A standard pelvic exam using a speculum allows the gynecologist to visually diagnose and identify cervical polyps that are visibly protruding from the external os of the cervical canal.

Transvaginal ultrasound (TVUS)

This is the first-line imaging modality for evaluating the uterine cavity. The transvaginal ultrasound probe helps assess endometrial thickness and identify localized structural alterations.

Sonohysterography (Saline Infusion Sonography)

A specialized procedure during which a small amount of sterile saline solution is instilled into the uterine cavity via a thin catheter to distend the uterine walls. This provides high-resolution visualization, allowing clinicians to accurately differentiate endometrial polyps from submucosal uterine fibroids (myomas).

Diagnostic hysteroscopy

An endoscopic method involving the insertion of a miniature camera (hysteroscope) through the cervix directly into the uterus. This allows direct, real-time visualization of the uterine cavity. If a polyp is detected, it can often be excised during the same procedure.

Malignancy risks – what does the data show?

The overwhelming majority of endometrial and cervical polyps are entirely benign. However, medical vigilance remains mandatory. A small percentage of polyps can contain precancerous cells (endometrial hyperplasia) or undergo malignant transformation into endometrial cancer.

Specialists from Harvard Health and the Mayo Clinic emphasize that the risk of malignancy increases substantially in postmenopausal patients, in cases where the polyp diameter exceeds 1.5 centimeters, or when the patient presents with co-morbidities such as severe obesity and arterial hypertension. Consequently, regardless of the polyp’s location or visual appearance, all excised polyps must be sent for histopathological evaluation to definitively rule out malignancy.

Treatment strategies – watchful waiting vs. surgery

The chosen clinical strategy is strictly individualized based on the patient’s age, symptom severity, and reproductive goals. The internationally accepted management protocol is outlined in the structured HTML table below:

How is a Uterine Polyp Removed?

Modern gynecology relies on minimally invasive, high-precision procedures performed under direct visual control:

Polyp Avulsion via Forceps (For Cervical Polyps)

As described by Harvard Health, standard cervical polyps can typically be removed during a routine outpatient visit in the gynecologist’s office. Using a specialized instrument (polyp forceps), the clinician gently grasps the stalk of the polyp and detaches it using a twisting motion. The procedure is rapid, causes minimal transient cramping, and does not require general anesthesia.

Hysteroscopic Polypectomy / Hystero-resectoscopy (For Endometrial Polyps)

This is performed in an operating room setting (usually as a day surgery). Guided by a high-definition monitor attached to the hysteroscope, the surgeon uses a specialized miniature loop to cleanly transect the polyp at its base. This prevents blind trauma to the surrounding healthy endometrial layers, replacing the obsolete blind dilation and curettage (D&C) method.

Frequently Asked Questions

A uterine or cervical polyp is a clinical condition that necessitates timely diagnosis and accurate differentiation. If you notice unexpected changes in your menstrual cycle, intermenstrual spotting, or any bleeding after the onset of menopause, consult your gynecologist immediately. Modern medical technology ensures that this pathology can be diagnosed and resolved quickly, safely, and with minimal tissue trauma.