Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright portable view of the chest . Tracheostomy tube is again seen . There is some limitation due to respiratory motion . There is mild fullness of the central pulmonary vasculature and indistinctness of the pulmonary vascular markings suggesting interstitial edema . There is no definite confluent consolidation . Cardiomediastinal silhouette is stable . No acute osseous abnormalities .
    OUTPUT:
    
Probable interstitial edema without definite consolidation based on this somewhat limited exam .