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  • Title: Compression of the Celiac Artery by the Median Arcuate Ligament: Multidetector Computed Tomography Findings and Characteristics.
    Author: Baskan O, Kaya E, Gungoren FZ, Erol C.
    Journal: Can Assoc Radiol J; 2015 Aug; 66(3):272-6. PubMed ID: 25896451.
    Abstract:
    PURPOSE: The prevalence of the celiac artery stenosis caused by median arcuate ligament (MAL) compression and its multidetector computed tomography (MDCT) characteristics were evaluated in patients who underwent abdominal MDCT procedures, retrospectively. METHODS: Totally 1121 patients who had abdominal MDCT with arterial phase or MDCT angiography of the abdominal aorta for various indications were analyzed for celiac artery compression by the MAL. RESULTS: Fifty (ie, 4.6%) patients showed typical MDCT features of MAL compression. Focal narrowing of the proximal celiac artery, a characteristic hooked appearance of the narrowed segment without calcification and atherosclerotic changes were diagnostic. Poststenotic dilatation was detected in 22 (44%) patients with MAL compression. The ratio of the stenosis of the celiac artery was between 35%-50% in 15 patients and 51%-80% in 35 patients. The gastroduodenal artery diameter of these patients was not significantly different from the asymptomatic control group. CONCLUSION: MALS is an uncommon entity but it should be kept in mind in the presence of unexplained gastrointestinal symptoms. MDCT is a minimally invasive and plays a dominant role in the diagnosis of MAL compression especially with reformatted and 3-D reconstructed images.
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