壁层胸膜 (parietal pleura) 分四部：颈根、膈、纵隔和肋部，颈根部最表浅。壁层胸膜部间移行反折处又形成了三个狭窄区（隐窝），即肋膈隐窝（costodiapnragmatic recess）、肋纵隔隐窝（costomediastinal recess）和膈纵隔隐窝，肋膈隐窝最低。
解除那部分决定于病变部位：脏层胸膜还是壁层胸膜。
The ease of which it can be removed is dependant on which of the pleural surfaces becomes malignant: the parietal pleura or the visceral pleura.
壁层胸膜转移结节分布在膈胸膜、肋胸膜、纵隔胸膜、肺韧带，共45处。
Parietal pleural dissemination with nodules were found in 45 sites which located on the diaphragmatic pleura, the costal pleura, the mediastinal pleura, and the pulmonary ligament.
病理学表现 ：为一种较少细胞的纤维透明蛋白病变，主要起自壁层胸膜面，特别是膈和肋骨下胸膜。
Pathology . —A pleural plaque is a fibrohyaline, relatively acellular lesion arising predominantly on the parietal pleural surface, particularly on the diaphragm and underneath ribs.
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