Pulmonary Parenchyma

Patchy alveolar infiltrates, widely distributed multiple irregular masses plus or minus pleural effusion and plus or minus thick-walled canvities. [courtesy of Dr. M. Hutcheon]

In this patient, note the irregular, soft, fluffy opacification at the right heart border suggestive of a medial right lower lobe pulmonary contusion.

Ill-defined infiltrating lesion in left hilar region.

Cavitation in apical regions and posterior segments of upper lobe plus or minus calcification. [courtesy of Dr. M. Hutcheon]