Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . The chest findings are completely unaltered and thus , there is no evidence of any pulmonary congestion , acute infiltrate or pleural effusion .
    OUTPUT:
    
Stable chest findings , no evidence of pneumonia .