A mesenteric cyst (MeSH C04.182.473) is a cyst in the mesenterium, and is one of the rarest abdominal tumors, with approximately 822 cases reported since 1507. The incidence is between 1 per 100,000 to 1 per 250,000 hospital admissions.Tillaux's triad named after the French surgeon Paul Jules Tillaux can be seen in cases of mesenteric cyst. [Source: Wikipedia 
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