Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The films are limited due to patient positioning . Severe dextroscoliosis unchanged . However , no gross focal consolidations are seen that are worrisome for an infectious process . A left perihilar nodular opacity is not clearly seen today due to difference in technique . No obvious pleural effusion . Heart size is likely enlarged .
    OUTPUT:
    
No evidence of pneumonia .