Ill-defined reticular and patchy opacities in the left greater than right hemithorax, particularly confluent in the left lung base, with a new small left pleural effusion. These findings raise concerns for multifocal infection or aspiration, less likely pulmonary edema.
Simple pleural effusion (Present) Aspiration (Uncertain) Air space opacity–multifocal (Uncertain) Edema (Uncertain)