Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable of right chest radiographs demonstrate low lung volumes . Apices of the lungs are not visualized secondary to chin which obscures the view . Heart size is enlarged . There is prominent bilateral central vessels , possibly sequela of bronchovascular crowding and likely mild vascular engorgement . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pneumonia . Cardiomegaly and pulmonary vascular congestion .