title: Retroperitoneal malignant fibrous histiocytoma causing variegated colonic lesions.
abstract: A 68-year-old man visited our hospital because of heartburn. A firm mass was palpated in the left upper abdominal quadrant. Ultrasonography and computed tomography revealed a large left sided retroperitoneal tumor. A barium enema examination showed shallow irregularly depressed or elevated lesions. Colonoscopy revealed an irregularly shaped ulcer and multiple submucosal masses suggesting invasion by an extrinsic malignant tumor. Although colonoscopic biopsy was negative, a resected tumor was histologically diagnosed as a malignant fibrous histiocytoma (MFH). When such varigated lesions are detected in the colon, MFH should be considered, and an attempt to sample the submucosal layer may be necessary.
authors.affiliation: Department of Gastroenterology, Gifu Prefectural Tajimi Hospital.
authors.forename: S
authors.initials: S
authors.lastname: Kobayashi
authors.forename: K
authors.initials: K
authors.lastname: Goto
authors.forename: S
authors.initials: S
authors.lastname: Shiraki
authors.forename: Y
authors.initials: Y
authors.lastname: Okayama
authors.forename: H
authors.initials: H
authors.lastname: Ando
authors.forename: F
authors.initials: F
authors.lastname: Okumura
authors.forename: S
authors.initials: S
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Hattsutori
authors.forename: T
authors.initials: T
authors.lastname: Joh
authors.forename: M
authors.initials: M
authors.lastname: Itoh
mesh_terms: D000368:Aged; D001706:Biopsy; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003113:Colonoscopy; D003937:Diagnosis, Differential; D005500:Follow-Up Studies; D018219:Histiocytoma, Benign Fibrous / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007813:Laparotomy; D008297:Male; D016609:Neoplasms, Second Primary / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D012186:Retroperitoneal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D014057:Tomography, X-Ray Computed