Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate an unremarkable cardiomediastinal and hilar contours . There are minimal atelectatic changes noted in the left lower lung without focal opacification concerning for pneumonia . No pleural effusion or pneumothorax evident . No osseous abnormality is identified .
    OUTPUT:
    
No acute intrathoracic process .