Persistent vague right infrahilar opacity without significant change, which may represent aspiration or infection, less likely atelectasis. The left lung field is clear. No evidence of pulmonary edema or pleural effusions. The cardiomedial silhouette is within normal limits.
Simple pleural effusion (Absent) Atelectasis (Uncertain) Aspiration (Uncertain) Edema (Absent) Pneumonia (Uncertain)