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 , with mild prominence of the interstitial lung markings , suggesting mild central pulmonary vascular congestion . No focal consolidation or pneumothorax identified . No evidence of pleural effusions . Degenerative changes of the visualized AC joints and bilateral glenohumeral joints are mild to moderate .
    OUTPUT:
    
1 . Low lung volumes with mild cardiomegaly , and mild prominence of the bilateral interstitial lung markings , suggestive of mild central pulmonary vascular congestion . 2 . No focal consolidation concerning for pneumonia .