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Classification of spontaneous isolated superior mesenteric artery dissection: correlation with multi-detector CT features and clinical presentation

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Abstract

Purpose

The purpose of the study is to propose a computed tomography (CT) classification of spontaneous isolated superior mesenteric artery dissection (SISMAD) correlated with clinical presentation

Methods

We retrospectively reviewed CT images of 40 patients with SISMAD at our institution from 2006 to 2015 and proposed a new classification: type I, patent false lumen with both entry and re-entry; type II, patent false lumen without re-entry; type III, completely or partially thrombosed false lumen; and type IV, thrombosed false lumen with ulcer-like projection. Additionally, we included a subtype (S) at each type when there was either a long segment of dissection and/or significant true lumen stenosis. CT features were statistically analyzed using Fisher’s exact and Mann–Whitney test.

Results

The CT findings classified patients as type I (15%), type II (12.5%), type III (35%), and type IV (37.5%). Of the 40 patients, 25 (62.5%) were symptomatic. There was a significantly different proportion of each type between symptomatic and asymptomatic patients (p = 0.005). There were 25 patients with subtype (S); no type I or II, 12 type III, and 13 type IV. The symptomatic patients showed longer dissection tendency and more severe true lumen stenosis (78% vs. 53%, p = 0.000) compared with asymptomatic patients.

Conclusion

The proposed multi-detector CT classification of SISMAD correlates with clinical presentation. This new classification could be helpful for treatment planning.

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Authors and Affiliations

  1. Department of Radiology, Chung-Ang University Hospital, 102 Heukseok-Ro, Dongjak-Gu, Seoul, 06973, Korea

    Jeongin Yoo, Jong Beum Lee, Hyun Jeong Park, Eun Sun Lee, Sung Bin Park, Yang Soo Kim & Byung Ihn Choi

Authors
  1. Jeongin Yoo
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  2. Jong Beum Lee
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  3. Hyun Jeong Park
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  4. Eun Sun Lee
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  5. Sung Bin Park
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  6. Yang Soo Kim
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  7. Byung Ihn Choi
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Correspondence to Jong Beum Lee.

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Yoo, J., Lee, J.B., Park, H.J. et al. Classification of spontaneous isolated superior mesenteric artery dissection: correlation with multi-detector CT features and clinical presentation. Abdom Radiol 43, 3157–3165 (2018). https://doi.org/10.1007/s00261-018-1556-6

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  • DOI: https://doi.org/10.1007/s00261-018-1556-6

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