[Operation for patent ductus arteriosus; report on 4 cases of pseudoaneurysm formation after surgery for patent ductus arteriosus and an introduction of a surgical technic].
D000783:Aneurysm / Q000175:diagnosis*; D004374:Ductus Arteriosus, Patent / Q000601:surgery*; D006801:Humans; D007223:Infant; D011183:Postoperative Complications