肺下积液是胸膜腔积液的一种特殊表现形式,临床并非少见。当积液量少时,若不予以足够重视,往往容易疏漏,造成漏诊,误诊。为提高对本征的认识,本文收集42例,就有关问题分析如下。资料分析临床资料:男36例,女6例。年龄18～76岁,18～30岁36例,31岁以上6例。36例有发热(高热7例,中热11例,低热18例),多数有程度不同的胸痛(少数向肩、上腹部、腰背部放射)、气短、咳嗽、呼吸 Pulmonary effusion is a special form of pleural effusion, the clinical is not uncommon. When the fluid volume is small, if not paid enough attention, often easy to omissions, resulting in missed diagnosis, misdiagnosis. In order to raise awareness of the intrinsic, this article collected 42 cases, the related issues are analyzed as follows. Data analysis Clinical data: 36 males and 6 females. Aged 18 to 76 years old, 18 to 30 years old in 36 cases, 31 years of age in 6 cases. 36 cases had fever (7 cases of high fever, 11 cases of moderate fever, 18 cases of low fever), most have different degrees of chest pain (a few to the shoulder, upper abdomen, waist and back radiations), shortness of breath, cough, breathing