Respiratory System

M/67. This vertical slice of the right lung shows the manner in which a pleural mesothelioma causes thickening of the pleura and encases the whole lung and mediastinum.
Malignant mesothelioma pleura

Malignant mesothelioma

Thick, firm, white, pleural tumor that ensheaths the lung. Nodular invasion into the lung parenchyma is also evident.

Note the thick, firm, white, pleural tumor that ensheaths this bisected lung.

Malignant mesothelioma

Malignant mesothelioma

Malignant mesothelioma with papillary formations and desmoplastic stromal reaction.