Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Left lower lobe opacity highly concerning for pneumonia . No pulmonary edema , pleural effusion , or pneumothorax is seen . The heart size is top normal . The mediastinal contours are normal . Nodular opacity at the right apex .
    OUTPUT:
    
Left lower lobe pneumonia . Nodularity at the right lung apex for which correlation with prior studies is recommended . If no prior is available a CT chest is recommended .