Navigating the labyrinth of women’s health concerns can sometimes feel like deciphering a complex code. One such enigma that often leaves many patients confused is the overlap in PMOS and fibroid symptoms. These two conditions, though distinct in nature, can manifest with strikingly similar signs, leading to incorrect diagnosis.
The Difference Between PMOS (PCOS) and Fibroids
Uterine fibroids and polycystic ovary syndrome (PMOS) are both common conditions affecting women’s reproductive health, but they differ in several ways. Uterine fibroids are benign tumors made of muscle and fibrous tissue that develop in the uterus, often leading to heavy menstrual bleeding, pelvic pain, and pressure symptoms.
In contrast, PMOS is a hormonal disorder characterized by the presence of multiple small cysts on the ovaries, irregular menstrual cycles, excess androgen levels, and symptoms like acne, hirsutism, and infertility. While fibroids are primarily structural abnormalities of the uterus, PMOS is a complex endocrine condition affecting ovarian function and hormonal balance.
PMOS (PCOS) and Fibroid Symptoms
PMOS and fibroids are two distinct gynecological conditions that can have overlapping symptoms with some key differences:
- Menstrual Bleeding: Fibroids are more likely to cause heavy and prolonged menstrual bleeding, whereas PMOS often leads to irregular or absent periods, with fewer patients complaining of heavy bleeding.
- Pelvic Pain: Pelvic pain and pressure are more commonly associated with fibroids. PMOS may cause pelvic discomfort, but it’s usually less localized and intense.
- Ovulatory Dysfunction: Infrequent or absent ovulation, leading to fertility issues, is a hallmark of PMOS. This is not a typical symptom of fibroids.
- Hormonal Symptoms: PMOS often presents with symptoms related to excess androgen hormones, such as acne, hirsutism, and male-pattern baldness. These symptoms are not typical of fibroids.
Diagnosing PMOS and fibroids involves different approaches because these conditions’ different characteristics and underlying causes.
Ways to Diagnose Fibroids
- Clinical Evaluation: the healthcare provider will discuss the patient’s medical history, including their menstrual cycle, symptoms, and any family history of fibroids.
- Physical Examination: during a pelvic examination he or she may feel for any abnormal growths or enlargement of the uterus.
- Imaging Studies (Transvaginal Ultrasound or MRI) are commonly used to confirm the presence of fibroids and assess their size and location.
- Hysteroscopy or Laparoscopy: In some cases, a hysteroscope (a thin, lighted tube) or laparoscope (a minimally invasive surgical instrument) may be used to directly visualize the uterine cavity and confirm the presence of fibroids.
- Biopsy (Rarely): If there are concerns that a fibroid could be cancerous (which is very rare), a biopsy may be recommended
Ways to Diagnose PMOS (PCOS)
- Clinical Evaluation: The diagnosis of PMOS typically begins with a clinical evaluation by a gynecologist or endocrinologist. This involves discussing the patient’s medical history, menstrual cycles, and symptoms.
- Physical Examination: During a physical examination, the healthcare provider may look for physical signs of PMOS, such as acne, hirsutism (excessive hair growth), and obesity.
- Blood Tests: Hormone level assessments are crucial for diagnosing PMOS. Common blood tests include:
- Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH): Elevated LH levels and a higher LH-to-FSH ratio are often seen in PMOS.
Testosterone: Elevated levels of testosterone and other androgen hormones may be observed in individuals with PMOS.
Anti-Müllerian Hormone (AMH): Elevated AMH levels are associated with increased follicle count, a characteristic of PMOS.
- Pelvic Ultrasound: An ultrasound of the pelvis may be performed to assess the ovaries. that may appear enlarged and contain multiple small follicles, giving them a “polycystic” appearance.
- Exclusion of Other Conditions: The healthcare provider will also exclude other possible causes of similar symptoms, such as thyroid disorders or adrenal gland disorders.
- Rotterdam Criteria: The diagnosis of PMOS is often based on the Rotterdam criteria, which require the presence of at least two out of three key features: irregular or absent menstrual cycles, hyperandrogenism (elevated androgen hormone levels or clinical signs like hirsutism), and polycystic ovaries on ultrasound.
The clinical evaluation is a common starting point for diagnosing both fibroids and PMOS, the diagnostic approach differs significantly:
· For fibroids, imaging studies such as ultrasound or MRI are crucial to visualize and confirm the presence of fibroids.
· For PMOS, hormone level assessments and ultrasound imaging of the ovaries play a central role in diagnosis, along with clinical signs and symptom evaluation.
It’s possible to have both PMOS (PCOS) and Fibroids
It has to be said that women may experience changes in their menstrual cycle due to several gynecologic conditions, and the causes can often change over time. For example, women diagnosed with PMOS at a young age may eventually develop uterine fibroids and begin to experience heavier and more frequent cycles in their 30s and 40s. In fact, according to the Black Women’s Health Study at Boston University, women with PCOS are 65% more likely than other women to develop uterine fibroids over time.
If you experience significant changes in the menstrual cycle, it is important to seek medical evaluation and diagnosis from your trusted Viva Eve healthcare provider. They can perform the necessary tests to accurately diagnose your condition and develop an appropriate treatment plan, and explain the difference between PMOS and fibroids.


