65 year old man with chronic cough productive of yellowish sputum and progressive breathlessness for many months, accompanied by low grade fever.
There is extensive destruction of the lung parenchyma by caseous necrosis resulting in cavitation, particularly in the upper lobe. The residual lung shows black carbon pigmentation and multiple pale foci of caseous necrosis. There is marked pleural fibrosis.
The mediastinal structures and soft tissue are adherent to the pleura due to dense adhesions.