mesopneumon

mesopneumon

An obsolete term that formerly dignified the portions of the visceral pleura that invest the root of the lung proximally, anteriorly and posteriorly, and which is contiguous with the mediastinal pleura.

mesopneumon

(mĕs″ō-nū′mŏn) [″ + pneumon, lung]
Meeting point of two pleural layers at the hilus of the lung.