title: MRI manifestations of gastrointestinal lymphoma.
abstract: The magnetic resonance (MR) images of 11 cases of gastrointestinal lymphoma are presented. The findings include irregularly thickened mucosal folds, irregular submucosal infiltration, annular constricting lesion, exophytic tumor growth, mesenteric masses, and mesenteric/retroperitoneal lymphadenopathy. The tumors were homogeneous and intermediate in signal intensity on T1-weighted images. Heterogeneously increased signal intensities were noted on T2-weighted images. There was mild to moderate enhancement after intravenous administration of gadolinium dimeglumine (Gd-DTPA). The submucosal tumor infiltration might be outlined between the strongly GD-DTPA-enhanced mucosa and the low-intensity muscular layer. In one case that received tumor resection, the pathological examination showed destruction of most parts of the muscular layer, and the MR images did not disclose the low-intensity muscular zone.
authors: Department of Radiology, Kaohsiung Medical College, Taiwan, Republic of China.
authors: C K
authors: CK
authors: Chou
authors: L T
authors: LT
authors: Chen
authors: R S
authors: RS
authors: Sheu
authors: C W
authors: CW
authors: Yang
authors: M L
authors: ML
authors: Wang
authors: T S
authors: TS
authors: Jaw
authors: G C
authors: GC
authors: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003287:Contrast Media; D005260:Female; D019786:Gadolinium DTPA; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D019786:Gadolinium DTPA