Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study of ___ . The AP single view has been obtained with patient in semi-upright position . Tracheostomy cannula is in place and unchanged in position . No further advanced pulmonary vascular congestion is noted . No new pulmonary parenchymal infiltrates can be identified on this single view portable chest examination with patient in semi-upright position . A previously identified PICC line remains in unchanged position . No pneumothorax in the apical area .
    OUTPUT:
    
No evidence of new acute infiltrates as can be identified on portable single view chest examination .