title: Heterotopic bone in the ovary associated with a mucinous cystadenoma.
abstract: Bone formation in the ovary, with the exception of developing in the setting of a mature cystic teratoma, is exceedingly uncommon. We report a case of bone formation within a mucinous cystadenoma of the ovary. A 19-year-old active duty female presented with an asymptomatic pelvic mass; sonographic imaging revealed a 5.7-cm complex right adnexal mass. A laparoscopic cystectomy was performed. Pathologic evaluation of the cyst revealed a mucinous cystadenoma. Contained within several of the thick fibrous septae were areas of well-formed bone. Although a benign finding, bone formation and associated fibrosis may lead to sonographic findings of concern during the evaluation of patients with a pelvic mass.
authors.affiliation: Departments of Obstetrics/Gynecology and Pathology, Wilford Hall U.S. Air Force Medical Center, 2200 Bergquist Drive, Suite 1, Lackland AFB, TX 78236-5300, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Zahn
authors.forename: B S
authors.initials: BS
authors.lastname: Kendall
mesh_terms: D000328:Adult; D018291:Cystadenoma, Mucinous / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D009999:Ossification, Heterotopic / Q000150:complications* / Q000473:pathology; D010051:Ovarian Neoplasms / Q000150:complications* / Q000473:pathology