Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . On the first view of the series , there is an abnormal convex contour along the right mediastinal border which could reflect the presence of lymphadenopathy . However , the second frontal view provided does not demonstrate this contour abnormality and therefore findings are of unclear significance . Consider repeat study with more optimal technique to further assess . No definite signs of pneumonia or CHF . No large effusion or pneumothorax .
    OUTPUT:
    
Abnormal mediastinal contour along the right margin on the first view of the series . Recommend repeat CXR with optimized positioning .