title: Primary pericardial synovial sarcoma.
abstract: A 57-year-old man was admitted to our hospital with cardiomegaly on a chest roentgenogram. A mediastinal tumor was observed during a chest computed tomographic scan and the patient was diagnosed with pericardial synovial sarcoma as a result of a tumor biopsy. Surgery, radiotherapy and chemotherapy were carried out, and although the tumor temporarily decreased in size, it subsequently increased and the patient died approximately 3 years following the initial medical examination. Most synovial sarcomas commonly occur in the vicinity of the joints of the extremities. Therefore, we herein report a rare case of synovial sarcoma which occurred in the pericardium.
authors.affiliation: Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Muramatsu
authors.affiliation: Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Takeshita
authors.affiliation: Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Tanaka
authors.affiliation: Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Morooka
authors.affiliation: Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Ryota
authors.initials: R
authors.lastname: Higure
authors.affiliation: Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: Motomi
authors.initials: M
authors.lastname: Shiono
keywords: Pericardial tumor; immunohistochemical analysis; synovial sarcoma