Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tunneled left internal jugular central venous catheter tip terminates in the right atrium . The heart is enlarged . There is elevation of the right hemidiaphragm , and in absence of priors , may represent diaphragmatic paralysis , which could be contributing to the patient 's shortness of breath . There is no evidence of pulmonary edema or pleural effusions . Obscuration of left heart border is indicative of a lingular opacity .
    OUTPUT:
    
1 . Elevated right hemidiaphragm , may be contributing to the patient 's shortness of breath . Correlation with prior chest radiography is recommended . 2 . No evidence of pulmonary edema or pleural effusions . 3 . Tunneled dialysis catheter terminates in the right atrium . 4 . Lingular opacity may represent atelectasis or infection , and warrants followup chest radiography .