Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unremarkable cardiomediastinal and hilar contours . Lung volumes are low bilaterally with linear atelectasis projecting over the right mid lung . No focal opacification concerning for pneumonia . No pleural effusion or pneumothorax . Old fracture deformity of the right proximal humerus is noted .
    OUTPUT:
    
No acute intrathoracic process .