Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is at the upper limits of normal , similar to prior exam . The mediastinal and hilar contours are within normal limits . The lungs show no lobar consolidation . Again a hiatal hernia is present . There is no pleural effusion or pneumothorax . There is no subdiaphragmatic free air . Air-fluid levels noted below the diaphragm may indicate obstruction or delayed gastrointestinal transit .
    OUTPUT:
    
No evidence of pneumonia ; question of intestinal obstruction or slowed intestinal transit . CT pending .