Rationale: Benign uterine leiomyomas are the most common pelvic tumors in women. The estimated lifetime risk is 70% in Caucasian women and 80% in African women. Leiomyomas often regress after menopause, and frequently also after childbirth. Uterine sarcomas are extremely rare. A Norwegian registry study published in 2016 found an incidence of 0.86/100,000 (0.0001%) in women over the age of 16.
References:
- Baird DD, Dunson DB, Hill MC, et al. High cumulative incidence of uterine leiomyoma in black and white women: ultrasound evidence. Am J Obstet Gynecol 2003; 188:100.
- Uterine leiomyosarcoma – incidence, treatment, and the impact of morcellation. A nationwide cohort study. Mette Skorstad, Andrew Kent, Marit Lieng, Acta Obstet Gynecol Scand. 2016 Sep;95(9):984-90. doi: 10.1111/aogs.12930. Epub 2016 Jun 7
- http://legeforeningen.no/Fagmed/Norsk-gynekologisk-forening/Veiledere/Veileder-i-gynekologi-2015/Myoma-uteri/