title: Ileocolic intussusception mimicking the imaging appearance of midgut volvulus as a result of extrinsic duodenal obstruction.
abstract: Duodenal obstruction caused by ileocolic intussusception in the absence of intestinal malrotation is extremely rare. We present and discuss the imaging findings in an infant with an intussusception secondary to a duplication cyst in whom sonography also showed inversion of the orientation of the mesenteric vessels and a distended stomach. A contrast medium study revealed a proximal duodenal obstruction with a beak appearance suggestive of midgut volvulus. At surgery, an ileocolic intussusception causing duodenal obstruction without concomitant malrotation or volvulus was found. The combination of duodenal obstruction and abnormal relationship of the mesenteric vessels as a result of ileocolic intussusception has not previously been reported in the literature.
authors.affiliation: Department of Diagnostic Imaging, Hospital for Sick Children, University of Toronto, 555 University Ave., Ontario, M5G 1X8, Toronto, Canada.
authors.forename: Flavia F
authors.initials: FF
authors.lastname: Gasparini
authors.forename: Oscar M
authors.initials: OM
authors.lastname: Navarro
authors.forename: Roshni
authors.initials: R
authors.lastname: Dasgupta
authors.forename: J Ted
authors.initials: JT
authors.lastname: Gerstle
authors.forename: Paul S
authors.initials: PS
authors.lastname: Thorner
authors.forename: David E
authors.initials: DE
authors.lastname: Manson
mesh_terms: D003937:Diagnosis, Differential; D013505:Digestive System Surgical Procedures; D004380:Duodenal Obstruction / Q000000981:diagnostic imaging / Q000209:etiology* / Q000601:surgery; D005260:Female; D006801:Humans; D007077:Ileal Diseases / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D007223:Infant; D045822:Intestinal Volvulus / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D007443:Intussusception / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000601:surgery; D017538:Mesenteric Artery, Superior / Q000002:abnormalities; D008642:Mesenteric Veins / Q000002:abnormalities; D018084:Ultrasonography, Interventional