CT differentiation of mesenteric ischemia due to vasculitis and thromboembolic disease.
OBJECTIVE
The purpose of this work was to differentiate CT findings of acute mesenteric ischemia due to vasculitis (MV) or thromboembolism (MTE).


METHODS
CT scans of 69 patients with mesenteric ischemia caused by MV (n = 37) or MTE (n = 32) were analyzed. After dividing the patients into groups with and without MV, we compared them with regard to gastrointestinal tract involvement patterns, mesenteric changes, and presence or absence of vascular thrombosis, atherosclerosis, other organ changes, and ascites.


RESULTS
Duodenum was involved only in the MV group (30%). The MV group had preferential involvement of the small intestine (89%) to large intestine (51%), whereas the MTE group showed even distribution. Multisegmental bowel involvement was more common in the MV group (86%) than in the MTE group (44%), especially in both jejunum and ileum and both small and large intestine. The MV group showed prominent involvement of the superior mesenteric vessel territory, although the MTE group showed even distribution. Splenomegaly and hydronephrosis were more frequently seen in the MV group and vascular thrombosis and atherosclerosis in the MTE group.


CONCLUSIONS
Although considerable overlap was noted, CT is useful in differentiating MV from MTE.
Kim
J K
JK
Department of Radiology, Asan Medical Center, University of Ulsan, South Korea.
Ha
H K
HK
Byun
J Y
JY
Yang
S K
SK
Jung
H Y
HY
Min
Y I
YI
Kim
P N
PN
Lee
M G
MG
Auh
Y H
YH
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005767:Gastrointestinal Diseases / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology; D006801:Humans; D007511:Ischemia / Q000175:diagnosis / Q000000981:diagnostic imaging* / Q000209:etiology; D008297:Male; D008643:Mesentery / Q000473:pathology*; D008875:Middle Aged; D013923:Thromboembolism / Q000150:complications*; D014057:Tomography, X-Ray Computed; D014657:Vasculitis / Q000150:complications*