Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single upright frontal view of the chest : Moderate cardiomegaly and a tortuous aorta are unchanged . There is no pneumothorax or focal airspace consolidation to suggest pneumonia . There is a vague opacity in the lower lungs which may represent atelectasis . There is no pleural effusion . Multiple bilateral lung nodules are better seen on prior CT . A left - side PICC has been removed . There is no free air is seen underneath the right hemidiaphragm .
    OUTPUT:
    
No evidence of free air .