title: [A case of undifferentiated pleomorphic sarcoma of the stomach showing rapid growth].
abstract: We report an extremely rare case of undifferentiated pleomorphic sarcoma of the stomach. A 74-year-old woman was admitted for abdominal discomfort. A 13-cm gastric submucosal tumor and multiple liver and bone metastases were detected by computed tomography. The tumor had not been detected 8 months earlier. We performed EUS-FNAB for a suspected mesenchymal tumor, but the immunohistochemical test (c-kit, CD34, desmin, SMA, S-100) findings were negative. The tumor was confirmed as wild type for c-kit and PDGFRα. It grew rapidly and the patient died 2 months after admission. Pathological analysis of the EUS-FNAB specimens and autopsy revealed an undifferentiated pleomorphic sarcoma.
authors.affiliation: Department of Gastroenterology, JR Sendai Hospital. masahiro-sai@mail.goo.ne.jp
authors.forename: Masahiro
authors.initials: M
authors.lastname: Saito
authors.forename: Keisuke
authors.initials: K
authors.lastname: Oikawa
authors.forename: Shiho
authors.initials: S
authors.lastname: Uchiyama
authors.forename: Yoshifumi
authors.initials: Y
authors.lastname: Inomata
authors.forename: Shu
authors.initials: S
authors.lastname: Abe
authors.forename: Hironobu
authors.initials: H
authors.lastname: Sasano
mesh_terms: D000368:Aged; D001344:Autopsy; D005260:Female; D006801:Humans; D009362:Neoplasm Metastasis; D012509:Sarcoma / Q000473:pathology*; D013274:Stomach Neoplasms / Q000473:pathology*