胸腔游离积液的典型分布,取决于地心吸力、肺的弹性回缩和两层胸膜之间的毛细管作用等因素,其 X 线表现早为人们所熟知,但如上述因素发生变化,则积液可呈不典型分布,局限于胸腔的某一部位,其 X 线表现随积液部位而不同,若对其认识不足,诊断常可发生困难,本文讨论不同部位局限性胸腔积液的 X 线表现及鉴别诊断问题,以提高大家对本病的认识。 The typical distribution of pleural effusion, depending on the centripetal suction, elastic retraction of the lung and the capillary between the two pleura and other factors, the X-ray performance as early as people are well-known, but as the above factors change, the product Liquid can be atypical distribution, confined to a certain part of the chest, and its X-ray performance varies with the fluid site, if its lack of knowledge, diagnosis can often occur difficult, this article discusses different parts of the limitations of pleural effusion X-ray Performance and differential diagnosis to raise awareness of the disease.