Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is elevation of the right hemidiaphragm . Assessment of the cardiac silhouette size is limited due to obscuration of the right heart border by an elevated right hemidiaphragm and right basilar opacity . The mediastinal contours are unremarkable , and there is no pulmonary vascular congestion . Small bilateral pleural effusions are noted . Linear opacities within the left lung base likely reflect atelectasis . Medial right basilar opacity could reflect atelectasis though infection or underlying mass with can not be excluded no pneumothorax is identified . No acute osseous abnormality is seen .
    OUTPUT:
    
1 . Small bilateral pleural effusions . 2 . Elevated right hemidiaphragm . 3 . Right medial basilar opacity could reflect atelectasis but infection or underlying mass is not excluded . Correlation with prior CT imaging is recommended . 4 . Subsegmental left basilar atelectasis .