A 52-year-old patient complains of mixed-type dyspnea and chronic cough with the expectoration of a large amount of foul-smelling mucopurulent sputum, sometimes with blood, that occurs mostly in the morning as a "full mouth." He has a history of frequent exacerbations of chronic bronchitis. Objectively, he has acrocyanosis and clubbed "drumstick" fingers. Respiratory rate - 22/min. Auscultation detects harsh breathing, fine and medium bubbling crackles can be heard in the lower lung segments on both sides. Spiral computed tomography of the chest detects areas of carnification, thin-walled cavities, and cylindrical dilatations of the bronchi. What is the most likely diagnosis in this case?