Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Elevation of the right hemidiaphragm is unchanged from prior . There is no pneumothorax or pleural effusion . A linear left basilar opacity has increased from ___ . Multiple right - sided rib deformities are unchanged .
    OUTPUT:
    
Linear left basilar opacity , favor atelectasis however an early pneumonia would be difficult to exclude .