Prolapse of the gastric mucosa into the duodenum, as the name implies, is the protrusion of the redundant gastric mucosa through the pylorus into the duodenum. It is not rare in occurrence, and it may be responsible for a number of undiagnosed gastrointestinal symptoms.
Since the first reported case of prolapse of the gastric mucosa was surgically proved by Schmieden,1 in 1911, over 100 cases have been reported as observed on x-ray but not confirmed by surgery.
Feldman2 indicates that redundant gastric mucosa occurs in approximately 1 % of all patients with gastrointestinal disease. Scott,3 reviewing 1,346 cases of upper gastrointestinal tract disease, found 14, or 1.04%. Rees4 found 4 cases of the condition in 3,000 patients who had upper gastrointestinal x-ray studies. Cove and Curphey5 reviewed 650 cases and found that prolapse had occurred in 22, or 3.38%. It was their impression that the incidence
Kaplan IW, Shepard RM. PROLAPSE OF THE GASTRIC MUCOSA INTO THE DUODENUM. JAMA. 1951;147(6):554–560. doi:10.1001/jama.1951.03670230020006
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