Polyalveolar lobe 2020-11-24T11:11:20Z Indiviudals with polyalveolar lobe have some pulmonary function abnormalities, specifically a decrease in airway conductance, and forced expiratory volume. An elevation of the total count of alveoli as determined by microscopic point-counting of randomly taken lung sections, not secondary to abnormalities in number, size and structure of the airways. In polyaveolar lobe, the number of alveoli is generally increased three to fivefold. Abnormal pulmonary alveolar system development