Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes with resultant bronchovascular crowding . There is stable mild cardiomegaly . Left - sided pacemaker with atrial and right ventricular leads is present . There is no pleural effusion , pneumothorax , or consolidation .
    OUTPUT:
    
Stable mild cardiomegaly without evidence of pneumonia .