Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . The heart size remains unchanged and is within normal limits . No typical configurational abnormalities identified . Unremarkable appearance of thoracic aorta . Pulmonary vasculature is crowded related to poor inspirational effort and relatively high positioned diaphragms , but there is no evidence of pulmonary vascular congestion . The lateral pleural sinuses are free . No evidence of acute infiltrates in comparison with the previous study and no pneumothorax in the apical area .
    OUTPUT:
    
Stable chest findings , no evidence of new acute infiltrate .