Uterine fibroids are the most commonly observed tumors of the female reproductive system. They develop in or on the uterus. Fibroids are compact tumors that are made of smooth muscle cells and fibrous connective tissues. Their sizes may vary, from the size of a pea to the size of a small grapefruit.
Most women develop uterine fibroids at some time in their life but they do not cause any problem to them. In some women, uterine fibroids may manifest as mild or no symptoms. In some cases, the symptoms can extend slowly and progressively over many years or rapidly over a few months. This requires treatment.
The exact cause of uterine fibroids is not known. Scientists believe that genetics and environmental factors play a significant role in their development and growth. There are certain risk factors that are believed to play a role in fibroid growth, such as hormonal changes (estrogen and progesterone levels), genetics, age etc.