Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no focal consolidation , pleural effusion , or pneumothorax . A nodular opacity in the left perihilar region may represent vessel , however is more prominent today than on prior exams . Cardiomediastinal silhouette is unchanged and notable for a tortuous aorta . There are no acute skeletal abnormalities . There are degenerative changes in the thoracic spine .
    OUTPUT:
    
1 . Left perihilar nodular opacity is more prominent on today 's study . Recommend follow up imaging with anterior shallow obliques . 2 . No pneumonia Findings # 1 were entered into the critical results dashboard by Dr . ___ at 4 pm . Findings # 2 were reported to Dr . ___ by Dr . ___ ___ telephone at 1 : 15 p .m .