Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There relatively low lung volumes . No focal consolidation is seen . Slight blunting of the posterior costophrenic angles is seen which may be due to trace pleural effusion . No large pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are unremarkable . Slight central pulmonary vascular engorgement is noted . There is suggestion of a hiatal hernia .
    OUTPUT:
    
Slight central pulmonary vascular engorgement without overt pulmonary edema . Possible trace pleural effusions . No focal consolidation to suggest pneumonia .