Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An opacity in the right upper lobe adjacent to the right paratracheal stripe is likely artifact , given the normal appearance of the right paratracheal stripe and oblique positioning of the patient . There is no effusion , pulmonary edema or pneumothorax . There is persistent elevation of the left hemidiaphragm with mild associated atelectasis . Mediastinal and hilar contours are normal . Heart size is normal .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Opacity in the right upper lobe adjacent to the right paratracheal stripe is most likely an artifact . Recommend PA and lateral views for further evaluation .