title: A case of gastric plexiform fibromyxoma: radiological and pathological findings.
abstract: Plexiform fibromyxoma is a relatively new pathological category that consists of a rare group of non-gastrointestinal stromal tumors with a peculiar plexiform growth pattern. We report a case of gastric plexiform fibromyxoma in a 60-year-old man. Gastroscopic examination revealed a gastric submucosal tumor in the antrum. Magnetic resonance imaging (MRI) showed a nodule with distinct signal hyperintensity on T2-weighted images, with strong enhancement peripherally in the early phase to the entire lesion in the delayed phase. Endoscopic ultrasound-guided fine-needle aspiration cytology was performed, and the cytological diagnosis was spindle cell tumor, so partial gastrectomy was performed under a preoperative diagnosis of GIST. The resected tumor demonstrated plexiform architecture, myxoid stroma, prominent vasculature, and spindle cells, reflecting the characteristic findings on MRI. This is the first report to describe radiological findings for gastric plexiform fibromyxoma.
authors.affiliation: Department of Radiology, Kyushu University Beppu Hospital, 4546 Tsurumihara, Beppu, Oita, 874-0838, Japan, k-sakamoto@beppu.kyushu-u.ac.jp.
authors.forename: Katsumi
authors.initials: K
authors.lastname: Sakamoto
authors.forename: Masakazu
authors.initials: M
authors.lastname: Hirakawa
authors.forename: Kazushige
authors.initials: K
authors.lastname: Atsumi
authors.forename: Koshi
authors.initials: K
authors.lastname: Mimori
authors.forename: Kohei
authors.initials: K
authors.lastname: Shibata
authors.forename: Taro
authors.initials: T
authors.lastname: Tobo
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Yamamoto
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Honda
mesh_terms: D003287:Contrast Media; D003937:Diagnosis, Differential; D061765:Endoscopic Ultrasound-Guided Fine Needle Aspiration / Q000379:methods; D005350:Fibroma / Q000000981:diagnostic imaging* / Q000473:pathology*; D005500:Follow-Up Studies; D019786:Gadolinium DTPA; D005773:Gastroscopy / Q000379:methods; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007479:Iopamidol / Q000031:analogs & derivatives; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology*; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; C057937:iomeprol; D007479:Iopamidol; D019786:Gadolinium DTPA
references.citation: ISRN Radiol. 2013 Sep 02;2013:483069
references.pmid: 24967280
references.citation: J Gastrointestin Liver Dis. 2009 Sep;18(3):379-83
references.pmid: 19795038
references.citation: Abdom Imaging. 2006 Jul-Aug;31(4):387-99
references.pmid: 16465584
references.citation: J Surg Oncol. 2011 Dec;104(8):865-73
references.pmid: 22069171
references.citation: Clin Imaging. 2006 Jul-Aug;30(4):278-82
references.pmid: 16814146
references.citation: AJR Am J Roentgenol. 2003 Jan;180(1):185-9
references.pmid: 12490500
references.citation: Acta Radiol. 2013 Dec;54(10):1107-16
references.pmid: 23858505
references.citation: Am J Surg Pathol. 2009 Nov;33(11):1624-32
references.pmid: 19675452
references.citation: Rom J Morphol Embryol. 2011;52(4):1361-8
references.pmid: 22203947
references.citation: Eur Radiol. 2005 Jul;15(7):1407-14
references.pmid: 15761716
references.citation: Clin Radiol. 2004 Jun;59(6):487-98
references.pmid: 15145718
references.citation: AJR Am J Roentgenol. 2004 Oct;183(4):893-8
references.pmid: 15385278
references.citation: Korean J Pathol. 2012 Jun;46(3):292-6
references.pmid: 23110018