Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube tip is in unchanged position . Lung volumes are low . Heart size is normal . Mediastinal contour is unchanged . Hilar contours are similar . Increased interstitial markings are noted diffusely throughout the right lung , and within the lower lung field on the left . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen . No subdiaphragmatic free air is demonstrated . Partially imaged is a gastrojejunostomy catheter within the upper abdomen .
    OUTPUT:
    
1 . Increased interstitial markings , more pronounced on the right . Findings may reflect superimposed asymmetric pulmonary edema on a background of chronic interstitial lung disease . Follow up radiographs after diuresis are recommended . 2 . No subdiaphragmatic free air .