Multicystic benign mesothelioma of the pelvic peritoneum presenting as acute abdominal pain in a young woman.

Multicystic benign mesothelioma (MBM) of the peritoneum is a very rare condition. Since the first description of MBM in 1979, approximately 100 cases have been reported. This is a case report of MBM of the pelvic peritoneum presenting as acute abdominal pain in a young woman. Laparoscopy confirmed multiple grapelike clusters of cysts that originated in the peritoneum of the rectouterine pouch and histopathologic diagnosis was confirmed as MBM of the pelvic peritoneum. We hope to alert gynaecologists of the diagnostic and therapeutic approaches to MBM which can be accomplished by laparoscopy.