Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrates the lungs are well expanded and clear . There is no evidence of pleural effusion , pulmonary edema or pneumothorax . A vague opacity in the left upper lung is persists on two frontal views , in the same area as seen on prior CT from ___ . Left pleural lipoma is unchanged . The cardiomediastinal silhouette is stable in appearance compared to the prior study and heart size is mildly enlarged , as before .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Vague opacity in the left upper lung in the same area as identified on the prior chest CT , which should be further evaluated with followup chest CT non-urgently , as recommended previously , to rule out underlying mass .