Key Takeaways: Uterine fibroids are benign growths grouped by location — submucosal (in the cavity), intramural (in the wall) and subserosal (on the surface). They’re driven by hormones and a genetic tendency, not by anything you did. Diagnosis is straightforward with ultrasound, and sometimes MRI or hysteroscopy. Outcomes vary by individual.
What are the types of uterine fibroids?
Fibroids are grouped by where they grow — submucosal (into the cavity), intramural (within the muscle wall) and subserosal (on the outer surface), sometimes on a stalk.
The main types:
- Submucosal — bulge into the uterine cavity; most linked to heavy bleeding and fertility issues.
- Intramural — sit within the muscle wall; the most common type.
- Subserosal — grow on the outer surface; more likely to cause pressure symptoms.
- Pedunculated — hang from a stalk, inside or outside the uterus.
Doctors also use the FIGO 0–8 system to describe exactly where a fibroid sits, which guides treatment. This is part of the wider fibroids resource.
What causes fibroids, and who is at risk?
Fibroids have no single cause; they grow under the influence of oestrogen and progesterone and are more likely with a family history and increasing reproductive age.
Recognised risk factors:
- A family history of fibroids.
- Hormones — oestrogen and progesterone drive growth; fibroids often shrink after menopause.
- Age — more common through the 30s and 40s.
- Obesity and early first period.
- Ethnicity — higher rates are reported in some groups.
Importantly, fibroids are not caused by anything you did wrong — and they’re not an infection or a cancer.
Fibroid myths vs facts
Many fibroid worries come from myths — that they always need surgery, always cause cancer, or always stop pregnancy. None of these is true.
| Myth | Fact |
|---|---|
| “All fibroids need surgery” | Many need only monitoring or medicines |
| “Fibroids are cancer” | They’re almost always benign |
| “Fibroids always prevent pregnancy” | Many women with fibroids conceive |
| “Only older women get fibroids” | They’re common in the 30s and 40s |
| “Fibroids always come back” | Recurrence is possible but not certain |
Clearing up the myths is part of good care — worry is often bigger than the condition itself.
How are fibroids diagnosed?
Fibroids are usually diagnosed on a pelvic ultrasound; MRI, saline sonography or hysteroscopy may be added to map them precisely before treatment.
Common tests:
- Pelvic (often transvaginal) ultrasound — the main test.
- Saline infusion sonography (SIS) — outlines cavity fibroids.
- MRI — maps large or numerous fibroids before surgery.
- Hysteroscopy — a direct look inside the cavity, which can also treat submucosal fibroids.
- Blood tests — to check for anaemia from heavy bleeding.
Mapping the fibroids accurately is what makes a tailored treatment plan possible.
(FAQS) Frequently Asked Question
Q1. Which type of fibroid causes the most bleeding?
Ans. Submucosal fibroids — those bulging into the uterine cavity — are most associated with heavy menstrual bleeding, even when small.
Q2. Are fibroids hereditary?
Ans. A family history does raise the chance of fibroids, so genetics play a role — but many women with fibroids have no family history at all.
Q3. Do fibroids turn into cancer?
Ans. Very rarely. Fibroids are almost always benign, and cancerous change (leiomyosarcoma) is uncommon. Rapid growth or post-menopausal bleeding should be reviewed to be safe.
Q4. Which test is used to diagnose fibroids?
Ans. A pelvic ultrasound is usually the first and most useful test for fibroids. MRI or hysteroscopy is added when more detail is needed to plan treatment.
Q5. Do fibroids go away after menopause?
Ans. Fibroids often shrink after menopause as hormone levels fall, and symptoms may ease. Any new post-menopausal bleeding, though, should always be checked.
Found a fibroid on a scan, or have symptoms? Get a clear diagnosis and plan.
📅 Book a consultation with Dr. Dimple Doshi · Vardaan Hospital, Goregaon West, Mumbai
