Pneumococcal pneumonia in chest X-ray

Most commonly occurs in alcoholics and other compromised hosts. Cavitation and pleural reaction are rare. In children, may produce the so-called round or spherical pneumonia, in which a well-circumscribed spherical consolidation on both frontal and lateral views simulates a pulmonary or mediastinal mass.

Imaging Findings:

It appears as Homogeneous consolidation that almost invariably abuts against a visceral pleural surface and almost always contains an air bronchogram.

Pneumococcal pneumonia. Homogeneous consolidation of the right upper lobe and the medial and posterior segments of the right lower lobe. Note the associated air bronchograms (arrows).