Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Moderate cardiomegaly is stable . Right lower lobe opacity has been present over multiple prior examinations and likely represents overlying soft tissue . No new opacity concerning for pneumonia is seen . No pleural effusion or pneumothorax is identified . The mediastinal contours are normal .
    OUTPUT:
    
No acute intrathoracic process .