Fig. 1From: Unnecessity of routine chest tube drainage after patent ductus arteriosus ligation in preterm neonatesChest radiographs showing subcutaneous emphysema (A-C, white arrow) around the thoracotomy site with full expansion of the left lung. The severity of subcutaneous emphysema was graded as scanty (A), mild (B), or moderate (C). All 19 patients’ subcutaneous emphysema was spontaneously absorbed (D-F) on the follow-up chest radiographs without active interventionBack to article page