Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . A nodular density with cavitation along the right lower lobe abutting the hemidiaphragm is more distinctly visible but probably decreased in size since the prior study , now with smooth margins . This may represent a resolving pulmonary infarct but should be followed with either radiography or CT within 6 months to reassess .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary disease . 2 . Persistent nodular density along the right hemidiaphragm , suspected to represent a small cavitating nodule associated with prior infarct . However , follow - up is recommended with either radiography or CT within 6 months for surveillance .