﻿第十四章常见小儿外科消化系统疾病第一节幽门肥厚性狭窄幽门肥厚性狭窄（hypertrophicpyloricstenosis，HPS）是因幽门环状括约肌增厚幽门管延长正常结构消失，导致胃出口部梗阻胃代偿性扩张、肥厚和蠕动加快幽门平滑肌细胞肥大，而非增生幽门肥厚性狭窄的临床及病理表现，认为该病是一种先天性疾病。
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