65 year old man with chronic cough productive of yellowish sputum, sometimes blood-tinged, and progressive breathlessness for many months. He died of respiratory failure.
Extensive destruction of lung parenchyma by caseous necrosis resulting in cavitation and exposure of tenuous traversing vascular structures, particularly in the apex. The residual lung shows multiple caseous nodules. There is fibrous adhesion of the parietal and visceral pleura with obliteration of the pleural cavity. The diaphragm is adherent to the fibrotic pleura.