Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , causing crowding of bronchovascular structures . There is mild cardiomegaly , but mediastinal and hilar contours are normal . Increased interstitial pulmonary lung markings are present , suggesting mild central pulmonary vascular congestion . No focal consolidation or pneumothorax .
    OUTPUT:
    
Mild central pulmonary vascular congestion . No focal consolidation .