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区域性门脉高压症(regional portal hypertension,RPH),亦称"左侧门脉高压症","局限性门脉高压症",或"胃区门脉高压症",系多种原因引起单纯性脾静脉梗阻,致门静脉脾胃区域压力增高超过正常所致.RPH占肝外型门脉高压症的5%,但却是唯一可治愈的门脉高压症[1].