Do fibroids turn into cancer, and what are red flags?

Benign uterine fibroids almost never “turn into” cancer. A true uterine leiomyosarcoma is rare and typically arises independently rather than from a pre-existing fibroid, which is why the overall risk remains low.

The red flags we take most seriously include a new or rapidly enlarging uterine mass after menopause, unusual or concerning findings on ultrasound or MRI, and bleeding patterns that don’t fit your prior history (especially new bleeding after menopause). When there are concerning features, our team focuses on a careful history review and expert imaging interpretation—often with MRI—to better assess risk and guide next steps. The only definitive way to diagnose leiomyosarcoma is through pathology after tissue is removed, so if you’re worried about your symptoms or imaging report, you can reach out to schedule a consultation with us for a personalized assessment.