Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting erect position . Comparison is made with the next preceding similar study of ___ . The examination interval is 14 hours . No significant interval change can be identified . The heart size may be at the upper limit of normal variation , but there is no evidence of any acute pulmonary vascular congestion or significant enlargement of the left atrium as can be identified on the single view chest examination . The lateral pleural sinuses remain free . Relatively low positioned diaphragms with somewhat flattened appearance give the impression of COPD as the patient also has some increased interstitial markings on the bases , but again acute infiltrates are not present , nor is there any evidence of pneumothorax in the apical area .
    OUTPUT:
    
Stable chest findings .