Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged allowing for differences in technique . Streaky right basilar opacity suggests scarring . A vague patchy density projects over the left mid to lower lung , probably in the lingula , but not well characterized . There is no evidence for pleural effusion or pneumothorax . An old healed right posterolateral sixth rib fracture is unchanged .
    OUTPUT:
    
Patchy opacity in the lingula raising concern for pneumonia ; however not well characterized on a portable radiography , and if further delineation is needed clinically , then standard PA and lateral radiographs may be helpful if feasible .