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Case Reports in Obstetrics and Gynecology
Volume 2014, Article ID 852583, 3 pages
Case Report

Multicystic Benign Cystic Mesothelioma Presenting as a Pelvic Mass

Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Medicine, Icahn School of Medicine at Mount Sinai Medical Center, 1176 Fifth Avenue, P.O. Box 1173, New York, NY 10029-6574, USA

Received 23 December 2013; Accepted 16 February 2014; Published 12 March 2014

Academic Editors: J. P. Geisler, D. Hochner-Celnikier, and B. Piura

Copyright © 2014 Mazdak Momeni et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background. Benign cystic mesothelioma (BCM) is a rare tumor that arises from the abdominal peritoneum with a predilection to the pelvic peritoneum. For this reason, it can often mimic gynecologic malignancies. Case. A 47-year-old perimenopausal female presented reporting several weeks of abdominal distention associated with abdominal tenderness and constipation. Computed tomography revealed a 24 cm multiloculated pelvic mass, and tumor markers were notable for an elevated CA-125. The patient was taken to the operating room for an exploratory laparotomy, total abdominal hysterectomy, bilateral salpingoophorectomy, and removal of pelvic mass. Final pathologic evaluation revealed a benign cystic mesothelioma. Conclusion. Classically these tumors present as large multicystic masses with thin-walled septations and on preoperative evaluation BCM can mimic many different disease entities including ovarian malignancies and cystic lymphangioma. Often diagnosis can only be made at time of surgery.