Medical Definition of megaduodenum
plural megaduodena \-ˈdē-nə; -ən-ə\play or megaduodenums
: a congenital or acquired dilation and elongation of the duodenum with hypertrophy of all layers that presents as a feeling of gastric fullness, epigastric pain, belching, heartburn, and nausea with vomiting sometimes of food eaten 24 hours before
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