Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates moderately well inflated and clear lungs . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Few bullae are seen within the right upper lobe . Heterogeneous opacity within left lower lobe is most consistent with atelectasis .
    OUTPUT:
    
1 . Right apical bullae . 2 . No definite pneumonia .