Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly appears accentuated due to the presence of low lung volumes compared to the previous chest radiograph . Aorta is unfolded . Mediastinal and hilar contours are unremarkable . Crowding of the bronchovascular structures is present without overt pulmonary edema . Patchy retrocardiac opacity as well as linear opacity in the lingula likely reflect areas of atelectasis without focal consolidation . No pleural effusion or pneumothorax is present . No acute osseous abnormalities detected .
    OUTPUT:
    
Moderate cardiomegaly , with heart size accentuated due to the presence of low lung volumes . Left basilar atelectasis .