J Korean Soc Radiol.  2010 Mar;62(3):257-261. 10.3348/jksr.2010.62.3.257.

The MDCT and MRI Findings of a Pancreatic Arteriovenous Malformation Combined with Isolated Dissection of the Superior Mesenteric Artery: A Case Report

• Oh JY
• Kim J
• Kim Y
• Jeong WK
• Song SY

• KMID: 2208921
• DOI: http://doi.org/10.3348/jksr.2010.62.3.257

Abstract

Pancreatic arteriovenous malformation and isolated spontaneous dissection of the superior mesenteric artery are both rare maladies, and now they can be easily diagnosed due to the development of such noninvasive modalities as multi-detector computed tomography and magnetic resonance imaging. We report here on the multi-detector computed tomography and magnetic resonance imaging findings of a rare case of pancreatic arteriovenous malformation combined with isolated dissection of the superior mesenteric artery.

MeSH Terms

Arteriovenous Malformations
Magnetic Resonance Imaging
Mesenteric Artery, Superior
Pancreas
Tomography, X-Ray Computed

Figure

• 

  Fig. 1 The MDCT and MRI findings of a 57-year-old man with epigastric pain. A. The axial scan during the arterial phase shows early-enhancing tortuous, dilated mass of vasculature (curved arrow) in the body of the pancreas. A dissecting flap (straight arrow) is seen within the SMA, beginning just distal to its origin from the aorta. B. Early enhancement of the portal vein (curved arrow) is seen during the arterial phase. C. The false lumen (within the broken lines) is seen as the low-attenuation filling defect that is due to thrombus. D. The oblique coronal MPR image provides a clearer image of both the pancreatic AVM (curved arrow) and the SMA dissection (straight arrow). E. On the fat-suppressed T2WI, the pancreatic AVM (curved arrow) demonstrates the characteristic signal void. F. The AVM (curved arrow) shows marked enhancement on the contrast-enhanced T1WI. G. The fat-suppressed T2WI of the proximal SMA reveals a discrepancy in the signal intensities of the true and false lumens (within the broken lines). The true lumen demonstrates a signal void due to high blood flow, while the false lumen shows hyperintensity due to the slower blood flow. H. The contrast-enhanced T1WI demonstrates enhancement of both the true and false lumens of the dissected SMA (within the broken lines).

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