Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in sitting semi-upright position . Comparison is made with the next preceding similar study of ___ . Tracheostomy cannula in place and unchanged in position . No pneumothorax has developed . Again , the patient is slightly rotated to the left with slightly asymmetric overlying soft tissues , obscuring the left base up to some mild degree . There is no evidence of new pulmonary abnormalities and no evidence of CHF .
    OUTPUT:
    
Stable chest findings .