title: Primary peritoneal serous papillary carcinoma presenting as a large mesenteric mass mistaken for ovarian cancer: a case of primary peritoneal carcinoma.
abstract: Peritoneal origin serous papillary carcinoma is an uncommon primary malignancy occurring in the abdominal or pelvic peritoneum lining. It is characterized by peritoneal carcinomatosis with massive ascites, uninvolved or minimally involved ovary, and is histologically indistinguishable from ovarian serous tumors. Better recognition of this phenomenon in recent years has contributed to an increasing diagnostic frequency. We describe a rare case of peritoneal origin serous papillary carcinoma with unusual clinical presentations involving a solitary primary tumor originating from the peritoneal lining of the sigmoid colonal mesentery, without pelvic lymph node involvement or distant metastasis. Because of the location and morphological similarity, it was misdiagnosed as an ovarian malignancy. We aim to assist in the diagnosis of this disease with the following case report, thereby improving the management of patients with this condition.
authors.affiliation: Department of Obstetrics and Gynecology, Busan St. Mary's Hospital, Busan, Korea.
authors.forename: Ji Woo
authors.initials: JW
authors.lastname: Kim
authors.affiliation: Department of Pathology, Busan St. Mary's Hospital, Busan, Korea.
authors.forename: Hwa Sun
authors.initials: HS
authors.lastname: Lee
authors.affiliation: Department of Obstetrics and Gynecology, Busan St. Mary's Hospital, Busan, Korea.
authors.forename: Kyu Sik
authors.initials: KS
authors.lastname: Shin
authors.affiliation: Department of Obstetrics and Gynecology, Busan St. Mary's Hospital, Busan, Korea.
authors.forename: Young Ho
authors.initials: YH
authors.lastname: Gam
authors.affiliation: Department of Obstetrics and Gynecology, Busan St. Mary's Hospital, Busan, Korea.
authors.forename: Kyung Don
authors.initials: KD
authors.lastname: Baik
keywords: Carcinomatosis; Mesenteric tumor; Ovary; Peritoneum; Serous papillary carcinoma