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| MSCTA features of spontaneous isolated superior mesenteric artery dissection |
| LIN Hong-dong, MA Wei-qiong, ZHOU Yu-xiang, TANG Run-hui |
| Department of Radiology, Huizhou Central Hospital, Huizhou Guangdong 516001, China |
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Abstract Objective: To summarize the MSCTA features and imaging classification of spontaneous isolated superior mesenteric artery dissection(SISMAD). Methods: Twenty-one cases of SISMAD were retrospectively analyzed through thin-slice enhanced and reconstructed CT images. Results: Based on the Yun classification of SISMAD, there were 12, 2, 7 and 0 cases of type Ⅰ, Ⅱa, Ⅱb and Ⅲ. Which fasle lumen and ture lumen were enhanced meanwhile, entry and re-entry of fasle lumen were found in near-end and far-end. There were near-end entry without far-end entry in 9 cases of type Ⅱ, which 7 cases were enhanced with near-end entry of fasle lumen and thromarbus were filled with far-end fasle lumen. Twenty-one cases of SISMAD were enlarged diameter of superior mesenteric artery(SMA) like an aneurysms. Seven cases were found calcified plaque in SMA wall, 1 case of calcified plaque moved inside SMA lumen. Five cases showed curved high density and fuzzy fat around SMA by non-enhanced scanning. Thirteen cases of intimal crevasse were located in ventral vascular wall of SMA, 5 cases located in left wall of true lumen, 3 cases located in right. Distance between the proximal intimal crevasse and orgin of SMA was 9～25 mm. Conclusion: SISMAD can be clearly showed imaging features and classification by MSCTA.
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Received: 16 May 2016
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