Osseous metaplasia of the endometrium and successful hysteroscopic resection: a report of two cases and a review of the literature.

Osseous metaplasia is a rare disorder of the endometrium that usually leads to secondary infertility and is frequently associated with recurrent abortions. Here we present two cases: one presenting with primary infertility and another presenting with oligomenorrhea. In both cases, vaginal ultrasonography showed an intrauterine structure that appeared hyperechogenic, suggesting calcification. Hysteroscopy revealed multiple white spicules of bony material in the uterine cavity. In both cases, the lesion was treated by hysteroscopic removal without complications. Histology established a diagnosis of endometrial osseous metaplasia. Thus, hysteroscopy was effective in the diagnosis and treatment of endometrial osseous metaplasia. The patient with primary infertility had spontaneous conception of twins 6 months after the procedure.