Endometrial Osseous Metaplasia: A Retrospective Analysis and Systematic Review.

Endometrial osseous metaplasia is a rare condition defined as the presence of heterotopic bone in the endometrium. A retrospective, monocentric analysis was conducted, including patients with endometrial osseous metaplasia, and a systematic review of the literature was performed. The retrospective analysis included 10 cases. Most patients (n = 9) were of reproductive age and had a history of miscarriage. The main symptoms were infertility (n = 4) and menstrual cycle disorders (n = 4). The size and the uterine site of the metaplasia varied. It is crucial not to underestimate it, especially in infertile patients with anamnesis of recurrent miscarriages.