Diffuse hazy opacity throughout the left lung, most prominent in the left upper lung. This finding likely represents air space opacity suggestive of infection, though differential considerations include loculated pleural effusion or mass. Further evaluation with a lateral view or CT of the thorax is recommended if clinically indicated.
Loculated pleural effusion (Uncertain) Air space opacity–multifocal (Uncertain) Mass/Solitary lung mass (Uncertain)