胸腔积液按其所在位置可分为游离性或普通型（即通常所说的最常见的胸腔积液）和局限性或称特殊类型的胸腔积液，后者因局限于胸膜的某一部位，故称局限性胸腔积液，这类积液主要靠胸部X线检查，必要时还需结合CT扫描、B型超声和定位穿刺确定诊断。按积液所在部位不同有以下几? Pleural effusion according to their location can be divided into free or normal type (commonly referred to as the most common pleural effusion) and localized or special type of pleural effusion, the latter due to be confined to a certain part of the pleura , It is called the limitations of pleural effusion, such fluid mainly depends on chest X-ray examination, if necessary, combined with CT scan, B-mode ultrasound and positioning puncture to determine the diagnosis. According to the fluid where the different parts of the following?