Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube is re- demonstrated . There are relatively low lung volumes . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . There is mild prominence of the central pulmonary vasculature which may be due to pulmonary vascular engorgement . No definite new focal consolidation is seen . Chronic deformity of right - sided ribs is re - demonstrated .
    OUTPUT:
    
Relatively low lung volumes . Mild central pulmonary vascular engorgement . No definite new focal consolidation .