Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is somewhat limited as the patient 's chin and soft tissues of the neck obscure evaluation of the apices . Lung volumes are low . The heart size is mildly enlarged . Aortic knob is calcified . Mediastinal and hilar contours are otherwise unchanged . There is no pulmonary vascular congestion . Patchy left basilar opacity likely reflects atelectasis , with no focal consolidation identified . No pleural effusion or large pneumothorax is seen . Old left - sided rib fractures are present .
    OUTPUT:
    
Limited exam . Low lung volumes with left basilar patchy opacity likely reflecting atelectasis .