Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The cardiac , mediastinal and hilar contours are unremarkable . A right mid lung opacity has essentially resolved . Streaky opacities at the left lung base have improved and suggest minor residual atelectasis .
    OUTPUT:
    
No definite evidence of acute disease . Low lung volumes and suspected minor left basilar atelectasis .