Focal opacity at the right costophrenic sulcus, which may represent a lung nodule or a small focus of air space disease. Increased opacity in the left retrocardiac region suggests the possibility of a small left pleural effusion. Clinical correlation and follow-up upright PA and lateral imaging are recommended.
Simple pleural effusion (Uncertain) Air space opacity–multifocal (Uncertain) Nodule/Solitary lung nodule (Uncertain)