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 semi-upright position . Analysis is performed in direct comparison with the next preceding AP and lateral chest examination of ___ . Status post sternotomy and bypass surgery , presence of left - sided permanent pacer with three intracavitary electrodes , two of which terminating in right atrial area and the third in right ventricular area . They all appear unchanged . The pulmonary congestive pattern , mild degree of pulmonary vascular distention and prominent vasculature in upper pulmonary compartments ( upper zone re-distribution pattern ) also appear unchanged . The pulmonary vasculature again appears crowded in the bases , apparently related to the relatively high - positioned diaphragms and poor inspirational effort . There is no evidence of acute parenchymal infiltrates or signs of pleural effusion blunting the lateral pleural sinuses as can be identified on a single view chest examination . No pneumothorax is seen in the apical area .
    OUTPUT:
    
Stable chest findings , no conclusive evidence for increasing pulmonary congestion . Comparison with next previous study obtained on ___ . Question of increasing pleural effusion or basal infiltrates could be answered more definitely if a lateral chest view had been obtained .