Can multiple uterine fibroids become cancerous?

Multiple uterine fibroids usually do not become cancerous, and the probability of malignant transformation is extremely low. Uterine fibroids are common benign tumors in the female reproductive system. They are mainly formed by the proliferation of smooth muscle cells and may be related to hormone levels, genetic factors, etc. If the fibroid grows rapidly in a short period of time or is accompanied by abnormal bleeding, you need to be alert to the possibility of malignant transformation.

The vast majority of patients with multiple uterine fibroids will not develop malignant transformation throughout their lives. Clinical data shows that the probability of uterine fibroids malignant into uterine sarcomas is less than 1%, and it is more common in postmenopausal women. These fibroids grow slowly, have clear borders, and often show homogeneous echogenicity on imaging examinations. Patients may experience symptoms such as increased menstrual flow and lower abdominal distension, but they will not experience the typical symptoms of cancer such as weight loss and cachexia. Regular gynecological ultrasound monitoring of fibroid size and blood flow signals is the main follow-up method.

Rarely, fibroids may develop sarcomatoid changes. When the diameter of fibroids increases by more than half of the original volume in a short period of time, or when the diameter of fibroids does not shrink but increases after menopause, the risk of malignant transformation needs to be considered. Abnormal vaginal bleeding accompanied by foul-smelling discharge and elevated tumor markers are early warning signs. The diagnosis requires pathological biopsy, and magnetic resonance examination can help determine whether the tumor boundary is infiltrated. Such patients need to undergo total hysterectomy as soon as possible, and whether to supplement radiotherapy and chemotherapy will be decided based on the pathological results after surgery.

It is recommended that patients with multiple uterine fibroids undergo a gynecological ultrasound every 6-12 months to observe the growth rate of the fibroids. Avoid long-term use of estrogen-containing health products or drugs, and control your weight to reduce the conversion of estrogen by adipose tissue. If symptoms of prolonged menstruation, anemia or compression occur, conservative treatment with drugs or minimally invasive surgery to remove fibroids can be considered. Any abnormal bleeding or worsening pelvic pain should be promptly investigated by a doctor.