Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause bronchovascular crowding and bilateral subsegmental atelectasis . Allowing for this , there is likely mild pulmonary vascular congestion without overt edema . Retrocardiac opacification may represent atelectasis or early consolidation depending on the clinical setting . There is no pneumothorax or pleural effusion . The cardiomediastinal contour is stable . The osseous structures are unremarkable . Ventriculoperitoneal shunt tubing and a tracheostomy tube project in unchanged location . A radiodensity projecting over the mid abdomen may represent a G - tube .
    OUTPUT:
    
Low lung volumes causing bronchovascular crowding , allowing for this , there is likely mild pulmonary vascular congestion without overt pulmonary edema .