title: Magnetic resonance imaging of perianal and perineal crohn disease in children and adolescents.
abstract: Noninvasive, nonionizing, multiparametric magnetic resonance (MR) imaging of the pelvis using a field strength of 3 T now provides a comprehensive assessment of perineal involvement in pediatric Crohn disease. MR imaging accurately evaluates inflammatory disease activity, and allows determination of the number and course of fistula tracts as well as their relationships to vital perianal structures, including the external anal sphincter, helping to guide surgical management and improve outcomes. This article provides an up-to-date review of perineal MR imaging findings of Crohn disease in the pediatric population, including fistulous disease, abscesses, and skin manifestations. Imaging technique is also discussed.
authors.affiliation: Section of Pediatric Radiology, Department of Radiology, C.S. Mott Children's Hospital, University of Michigan Health System, 1540 East Hospital Drive, Room 3-220, Ann Arbor, MI 48109-4252, USA. Electronic address: hammerm@med.umich.edu.
authors.forename: Matthew R
authors.initials: MR
authors.lastname: Hammer
authors.forename: Jonathan R
authors.initials: JR
authors.lastname: Dillman
authors.forename: Ethan A
authors.initials: EA
authors.lastname: Smith
authors.forename: Mahmoud M
authors.initials: MM
authors.lastname: Al-Hawary
mesh_terms: D000293:Adolescent; D001003:Anal Canal / Q000473:pathology*; D002648:Child; D003424:Crohn Disease / Q000473:pathology*; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D056888:Patient Positioning / Q000379:methods*; D010502:Perineum / Q000473:pathology*; D011349:Proctitis / Q000473:pathology*
keywords: Abscess; Children; Crohn disease; Fistula; Magnetic resonance imaging; Pelvis; Perianal; Perineum