Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unremarkable mediastinal , hilar and cardiac contours . The lungs are clear . Minimal blunting of left costophrenic angle without pleural effusion evident on lateral view suggests pleural scarring . No pneumothorax .
    OUTPUT:
    
No acute intrathoracic process . No cardiomegaly evident .