Plural form referring to multiple surgical procedures that create openings between the stomach and the jejunum (middle section of small intestine).
From gastro- (stomach) + jejuno- (jejunum) + -stomy (creating an opening) + -ies (plural). This specific bypass procedure became common in bariatric and ulcer surgery.
Surgeons prefer jejunal connections over duodenal ones because they can skip over more of the intestine, which is especially useful in weight-loss surgery!
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