congenital nevus胎生痣congenitaladj.天生的；先天的congenital cardiovascular anomaly先天性心血管畸形congenital dislocation of patella先天性髌骨脱位Congenital obstruction of urethra先天性尿道梗阻congenital choledochus dilatation先天性胆总管扩张congenital laryngeal malformation先大性喉畸形congenital absence of gallbladder先天性胆囊缺失congenital missing lower incisors下切牙先天缺失Congenital anomaly of optic nerve先天性视神经异常congenital upper limb abnormality先天性上肢畸形congenital degeneration of macula先天性黄斑变性