Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest frontal and lateral radiographs demonstrate unremarkable cardiomediastinal and hilar contours . Faint density obscuring right heart border is likely due to mild pectus excavatum . No opacification concerning for pneumonia identified . No pleural effusion or pneumothorax evident . No osseous abnormality is present .
    OUTPUT:
    
No acute intrathoracic process .