Figure 3From: A causal relationship between right paraduodenal hernia and superior mesenteric artery syndrome: a case report Upper gastrointestinal series shows: (A) Upper gastrointestinal series shows stricture of the duodenal third portion with a straight line cut-off sign in supine position. (B) In the prone position, the contrast medium passes through the obstructed part to the distal side of duodenal third portion.Back to article page