先天畸形是指胎儿在形成过程中，由于某些因素引起的形态结构异常，多为肉眼所见。 小儿先天畸形的种类很多，但什么时候为适宜的手术时间呢？这主要根据病情而定。有的畸形需要刻不容缓的手术，如先天性食管闭锁、先天性肛门闭锁，手术是唯一挽救生命的办法。另外，有些畸形虽 Congenital malformation refers to the fetus in the formation process, due to some factors caused by morphological abnormalities, mostly seen by the naked eye. There are many types of congenital malformations in children, but when is the appropriate operation time? This is mainly based on the condition. Some deformities require urgent surgery, such as congenital esophageal atresia, congenital anal atresia, surgery is the only way to save lives. In addition, although some deformities