Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . High - positioned diaphragms indicate poor inspirational effort and conceal major portion of heart shadow . It also results in crowded appearance of the pulmonary basal vasculature , but there is no evidence of any pulmonary infiltrate and the lateral pleural sinuses are free . No pneumothorax in the apical area . Skeletal structures of the thorax quite unremarkable as can be identified on single view . There exists no prior chest examination or records available for comparison .
    OUTPUT:
    
Pre-operative chest findings within normal limits on single view chest examination .