An unusual case of megaduodenum
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Megaduodenum is a rare entity in adults which may be either primary idiopathic or secondary. The secondary causes include Chagas disease, systemic sclerosis, duodenal stenosis, and visceral myopathy, connective tissue disorders such as Ehlers-Danlos syndrome, strongyloidiasis or superior mesenteric artery syndrome. Mid gut malrotation and congenital bands usually present in childhood. Adults usually present with abdominal pain, nausea, vomiting and complications of bacterial overgrowth: deconjugation of bile salts, malabsorption and polyneuropathy. We present a case of megaduodenum secondary to a combination of an internal hernia with kinking at the duodenojejunal flexure and chronic superior mesenteric artery (SMA) syndrome which was managed successfully with a side to side Roux-en-Y duodenojejunostomy...

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