Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Vague opacity in the mid - to - upper lung zone , best appreciated on the frontal view was potentially present on the prior study . There is no pleural effusion or pneumothorax . The cardiac and mediastinal contours are unremarkable .
    OUTPUT:
    
Right lung vague opacity . Given lack of definite stability , a non-emergent chest CT is recommended for further evaluation . Recommendations sent to the ED QA Nurses on ___ at 15 :40 by Dr . ___ .