Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mass - like opacity in the left lower lobe , measuring approximately 5 .2 cm . There is elevation of the right diaphragm , consistent with history of right diaphragmatic paralysis . Heart size is within normal limits . Mediastinal and hilar contours are unremarkable . There is no evidence for pulmonary edema , pleural effusion , or pneumothorax .
    OUTPUT:
    
5 .2 cm left lower lobe mass - like opacity , concerning for primary lung malignancy arising in a setting of chronic interstitial lung disease . Round pneumonia is considered less likely . Further evaluation with chest CT is recommended .