The alveoli are filled with exudate. The air is displaced, converting the lung into a solid organ. This description suggests-
• ‘Bacterial invasion of the lung parenchyma causes the alveoli to be filled with an inflammatory exudate, thus causing consolidation (“solidification”) of the pulmonary tissue’…..Robbins definition of pneumonia
Chronic bronchitis
Bronchial asthma
Bronchiectasis
Lobar pneumonia