Fibroid

What Fibroids Are

Fibroids, also known as leiomyomas, are noncancerous tumors made of smooth muscle tissue that usually grow in the uterus (womb). The uterus is the organ where a baby grows during pregnancy. Fibroids can be as small as a pea or grow large enough to make the belly look swollen, sometimes resembling pregnancy. They are very common, especially in women during their childbearing years.

Fibroids develop from muscle cells in the uterus wall and can appear as a single tumor or in groups. The exact cause of fibroids is not fully understood, but hormones like estrogen and progesterone seem to encourage their growth. Genetics and other factors such as obesity and vitamin D levels may also play a role.

Why Fibroids Matter in Women’s Health

Most fibroids do not cause symptoms and do not need treatment. However, when fibroids grow large or are located in certain areas, they can cause problems. Common symptoms include heavy or painful menstrual bleeding, bleeding between periods, pelvic pressure or pain, frequent urination, and pain during sex. In some cases, fibroids can affect fertility or pregnancy, though this is less common.

Fibroids are not cancer and very rarely become cancerous. However, because they can cause symptoms similar to other uterine conditions, it is important to have them evaluated by a healthcare provider.

What Patients May Experience and Learn

Many women discover fibroids during a routine pelvic exam or imaging tests done for other reasons. If symptoms occur, they might notice heavy periods that cause anemia (low iron), pelvic discomfort, or a feeling of fullness in the lower belly. Sometimes fibroids cause no symptoms at all.

When fibroids are found, your healthcare provider may explain what they are, how they might affect your health, and discuss treatment options if needed. It’s common to hear fibroids called leiomyomas or fibromyomas, which are other names for the same condition.

How Fibroids Are Diagnosed and Treated

Diagnosis usually starts with a pelvic exam. Imaging tests like ultrasound or MRI can show the size, number, and location of fibroids. Blood tests may be done if heavy bleeding causes anemia. In some cases, other tests or biopsies are needed to rule out other conditions.

Treatment depends on symptoms, fibroid size and location, age, and pregnancy plans. If fibroids cause no symptoms, treatment may not be necessary. For symptoms, options include medications to reduce bleeding or pain, hormone therapies, or procedures like uterine artery embolization, which blocks blood flow to fibroids to shrink them. Surgery to remove fibroids (myomectomy) or the entire uterus (hysterectomy) may be considered in more severe cases.

Understanding Fibroids in Context

Seeing the term "fibroid" in a medical report does not mean cancer or a serious problem. Fibroids are common and usually benign. However, because fibroids can cause symptoms similar to other uterine conditions, it’s important to discuss what the term means for your specific situation with your healthcare provider.

Fibroids are part of a broader group of uterine conditions that can affect menstrual bleeding and fertility. Other terms you might hear include uterine polyps, adenomyosis, or endometriosis. Comparing these terms and asking your care team to explain how fibroids relate to your health can help avoid confusion.

Next Steps and Questions to Ask

If fibroids are mentioned in your medical care, consider asking your healthcare provider: What size and location are the fibroids? Are they causing my symptoms? What treatment options are available and what are their risks and benefits? How might fibroids affect my fertility or pregnancy plans? Do I need follow-up exams or imaging?

Remember, this information is educational and does not replace personalized medical advice. Your healthcare team can help you understand what fibroids mean for your health and guide you toward the best care for your situation.