title: The most characteristic lesions and radiologic signs of Crohn disease of the small bowel: air enteroclysis, MDCT, endoscopy, and pathology.
abstract: This pictorial essay describes the most characteristic lesions and radiologic signs of Crohn disease of the small bowel: nodular lymphoid hyperplasia, abnormal mucosal folds, villous pattern, aphthous ulcerations, linear ulcerations, cobblestone pattern, string sign, target sign, comb sign, creeping fat, sinus tracts, fistulas, and abscesses. Each description includes the definition, a correlation with the pathologic findings, an explanation of the possible physiopathologic mechanism, sample radiologic images with air enteroclysis or MDCT, the correspondence with the endoscopic findings when possible, and a list of differential diagnoses.
authors.affiliation: Department of Radiology, Louisiana State University Health Sciences Center, 1501 Kings Hwy, Shreveport, LA, 71103, USA, acarbo@lsuhsc.edu.
authors.forename: Alberto I
authors.initials: AI
authors.lastname: Carbo
authors.forename: Threta
authors.initials: T
authors.lastname: Reddy
authors.forename: Thomas
authors.initials: T
authors.lastname: Gates
authors.forename: Telciane
authors.initials: T
authors.lastname: Vesa
authors.forename: Jaiyeola
authors.initials: J
authors.lastname: Thomas
authors.forename: Enrique
authors.initials: E
authors.lastname: Gonzalez
mesh_terms: D003424:Crohn Disease / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000503:physiopathology; D016099:Endoscopy, Gastrointestinal; D006801:Humans; D006965:Hyperplasia; D007082:Ileum / Q000000981:diagnostic imaging; D007413:Intestinal Mucosa / Q000000981:diagnostic imaging / Q000473:pathology; D008221:Lymphoid Tissue / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods; D061330:Multidetector Computed Tomography