Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular central venous catheter has been removed . Moderate cardiomegaly is unchanged . The mediastinal and hilar contours are stable . There is no pulmonary vascular engorgement . Right basilar ill - defined opacification persists , and may reflect atelectasis and / or scarring . A small right pleural effusion is relatively unchanged . Left lung is clear . No pneumothorax is identified . Partially imaged is cervical spinal fusion hardware .
    OUTPUT:
    
Persistent right basilar opacity which may reflect atelectasis and / or scarring with unchanged small right pleural effusion .