An abnormal narrowing of the stomach, usually the stomach outlet, that can prevent food from passing through properly.
From Greek 'gastro-' (stomach) + 'stenosis' (narrowing). The term combines the Greek word for stomach with a medical suffix indicating constriction or abnormal narrowing of a passage.
Gastrostenosis is particularly common as a complication of peptic ulcers—the scarring that forms as an ulcer heals can actually cause the stomach opening to narrow, making it harder for food to leave the stomach.
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