66 year old man complains of a chronic cough productive of copious greenish, foul-smelling, purulent sputum, especially in the morning after waking up. The sputum was blood-stained occasionally.
The lung shows a conglomerate of cystically dilated bronchial structures with thickened walls. They communicate with the main bronchus (unlike true cysts), and extend all the way to the pleural surface. Before sectioning the tissue, these dilated bronchi contain foul-smelling purulent exudates.