title: A case of postirradiation angiosarcoma of the greater omentum with hemorrhage.
abstract: Angiosarcoma, one of the least common sarcomas, occurs most commonly in the skin and soft tissues, and postirradiation angiosarcoma of the greater omentum is extremely rare. Only one reported case of postirradiation angiosarcoma involved the greater omentum. We describe the case of 74-year-old female with a history of cervical cancer treated with abdominal irradiation 5 years before. On admission, she had nausea, vomiting anorexia, and fatigue. She underwent an abdominal computed tomography scan that revealed an irregularly shaped tumor bounded by transverse colon. The patient died on the 34th hospital day. Autopsy revealed that the tumor was composed of anastomosing irregular vascular channels of variable calibers, involving the adipose tissue of the omentum. Histological studies suggested angiosarcoma. The definitive diagnosis was postirradiation angiosarcoma of the greater omentum, which is an extremely rare condition with an overall dismal prognosis.
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Miyuki
authors.initials: M
authors.lastname: Sakemi
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan. k-ikyoku@kyoaikai.com.
authors.forename: Ryosuke
authors.initials: R
authors.lastname: Sakemi
authors.affiliation: Third Department of Internal Medicine, University of Occupation and Environmental Health, Japan School of Medicine, Kitakyushu, Japan.
authors.forename: Masaru
authors.initials: M
authors.lastname: Harada
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Suketo
authors.initials: S
authors.lastname: So
authors.affiliation: Department of Radiology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Daiji
authors.initials: D
authors.lastname: Uchiyama
authors.affiliation: Division of Pathology, Tobato Kyoritsu Hospital, Kitakyushu, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Morimitsu
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Seiya
authors.initials: S
authors.lastname: Kakiuchi
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Ishihara
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Kubo
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Satoru
authors.initials: S
authors.lastname: Matsugaki
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Tetujiro
authors.initials: T
authors.lastname: Ono
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Junko
authors.initials: J
authors.lastname: Takane
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Ei
authors.initials: E
authors.lastname: Sasaki
authors.affiliation: Department of Gastroenterology, Tobata Kyoritsu Hospital, 2-5-1, Sawami-machi, Tobata-ku, Kitakyushu, Fukuoka, 804-0093, Japan.
authors.forename: Masayuki
authors.initials: M
authors.lastname: Shimokobe
authors.affiliation: Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, Kurume, Japan.
authors.forename: Michio
authors.initials: M
authors.lastname: Sata
keywords: Angiosarcoma; Greater omentum; Irradiation