Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate unremarkable cardiomediastinal contours . Lungs are clear . As before , there is mild blunting of the right lateral costophrenic angle likely reflecting atelectasis or scarring given persistence since ___ . No pleural effusion is definitively identified . No pneumothorax is present . No osseous abnormality present .
    OUTPUT:
    
No acute intrathoracic pathology .