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The purpose of this series is to describe the sonographic findings in 4 patients with intestinal obstruction due to internal hernia. Four patients had clinical features of intestinal obstruction. Sonography was performed with broadband convex and linear array transducers in these patients. In all 4 patients, there were features of intestinal obstruction with a zone of transition between dilated and nondilated bowel. There was a cluster of crowded, compressed, and aperistaltic small-bowel loops, as if they were tightly packed within a sac, by the side of this zone in 3 patients. This appearance was due to obstruction of the afferent loop caused by compression. In the last patient, there were 2 loops of dilated bowel within a sac outlined by fluid due to obstruction of the efferent loop. All 4 patients had obstructed internal hernias at laparotomy. Sonographic features of internal hernia are described.


S Boopathy Vijayaraghavan. Sonographic features of internal hernia. Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine. 2006 Jan;25(1):105-10

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PMID: 16371560

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