Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . There is a streaky increased opacity at the medial lung base including a new band - like opacity in the right middle lobe , although more suggestive of atelectasis than pneumonia . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
New vague medial right basilar opacity , probably due to minor atelectasis . If clinical concern for the possibility of pneumonia were to persist , however , then short - term followup radiographs could be considered , however , preferably with PA and lateral technique , if feasible .