Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP chest radiograph . The tip of the left chest tube is slightly different in position , now lying along the inner surface of the left chest wall , near the site of chest rib fractures . The small focus of atelectasis in left mid lung persists , slightly more linear at this time . No definite pneumothorax is identified . Minimal atelectasis in the left costophrenic angle is new . There is probably also mild atelectasis at the right base accounting for a faint opacity there . No CHF or frank consolidation . No right effusion . The cardiomediastinal silhouette is unchanged , allowing for differences in positioning . Multiple rib fractures are again noted , best depicted on the ___ CT scan . Incidental note made of an old healed right proximal humeral fracture , with soft tissue fixation anchor over the right humeral head .
    OUTPUT:
    
1 . Slight change in position of left chest tube , with tip now along inner surface of left mid chest wall . Question slight interval retraction . No pneumothorax identified . 2 . Faint opacity right base , question atelectasis . Minimal atelectasis at left costophrenic angle and in the left mid zone . Otherwise , no acute pulmonary process identified . 3 . Multiple rib fractures again noted .