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  Indian J Med Microbiol
 

Figure 1: Barium swallow: Extrinsic compression of the 3rd portion of duodenum, at the level of superior mesenteric artery crossing, causing partial obstruction as barium passes through the 3rd to 4th portion

Figure 1: Barium swallow: Extrinsic compression of the 3<sup>rd</sup> portion of duodenum, at the level of superior mesenteric artery crossing, causing partial obstruction as barium passes through the 3<sup>rd</sup> to 4<sup>th</sup> portion