title: Spontaneous rupture of a middle colic artery aneurysm arising from superior mesenteric artery dissection: Diagnosis by color Doppler ultrasonography and CT angiography.
abstract: Both middle colic artery (MCA) aneurysm and spontaneous dissection of the superior mesenteric artery (SMA) are rare. We report the first case of concomitancy of both conditions, diagnosed by ultrasonography and CT angiography. A 56-year-old man with abrupt abdominal pain and hypovolemic shock was diagnosed initially with ruptured MCA aneurysm by color Doppler ultrasonography. Computed tomography and angiography confirmed MCA aneurysm and showed that it was arising from the false lumen of an SMA dissection and was probably associated with segmental arterial mediolysis. The MCA aneurysm was treated successfully by transcatheter coil embolization, and the SMA dissection was treated conservatively.
authors.affiliation: Department of Radiology, Eulji University Hospital, Dunsan 2-dong, Seo-gu, Daejeon, Korea.
authors.forename: Bo Reum
authors.initials: BR
authors.lastname: Yoo
authors.forename: Hyun Young
authors.initials: HY
authors.lastname: Han
authors.forename: Young Kwon
authors.initials: YK
authors.lastname: Cho
authors.forename: Suk Jin
authors.initials: SJ
authors.lastname: Park
mesh_terms: D000784:Aortic Dissection / Q000000981:diagnostic imaging*; D017542:Aneurysm, Ruptured / Q000000981:diagnostic imaging*; D003106:Colon / Q000098:blood supply*; D006801:Humans; D008297:Male; D017538:Mesenteric Artery, Superior / Q000000981:diagnostic imaging; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D018615:Ultrasonography, Doppler, Color