Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided pigtail catheter tip projects over the left upper lung field , with a moderate amount of subcutaneous emphysema seen in the left chest wall extending into the left neck . A small apical left pneumothorax is present . Patchy opacity within the left lung base may reflect atelectasis . Cardiac silhouette size is mildly enlarged . The aorta is mildly tortuous . There is no pulmonary edema . Small left pleural effusion may be present . No right - sided pneumothorax is seen . There is minimal atelectasis in the right lung base .
    OUTPUT:
    
Status post left pigtail chest tube placement with persistent small left apical pneumothorax . Subcutaneous emphysema within the left chest wall and left neck . Left basilar opacity likely reflects atelectasis with possible small left pleural effusion .