A Head, Neck & Thorax: Cranioschisisis/ Meningeal sac removal & repair any age Spina bifida/ Spinal sac removal & repair any age Pre-auricular sinus tract/ Sinusoidectomy >1 year old Thyroglossal cysts or fistulas/ removal >2 years old Gill cysts or fistulas/ removal >1 year old Cervical Cystic Lymphadenoma/ removal any age Funnel Chest/ Sternum Elevation or Flip Sectomy 3~6 years old Body surface hemangiomas/ removal any age (as early as possible) Congenital myotonic strabismus/ sternocleidomastoid myotomy >1 year B Abdomen & Urology: Umbilical Hernia/ Hernia Repair >2 years old Vitreous Duct failure/ Vitrectomy Neonatal period Inguinal Hernia/ Hernia Sac High Ligation >3 months Sheath effusion/ Sheath High Ligation >1 year old Hydrocele/ Pyeloplasty Any age Cryptorchidism/ Testicular Fixation 1~2 years old Phimosis/ Circumcision >3 years old Hypospadias/ Circumcision Circumcision >3 years Hypospadias/ Urethroplasty 6~18 months Supraspadias/ Urethroplasty 2~3 years Biliary atresia/ Choledochotomy 1~2 months Choledochal cyst/ Cystectomy, biliary reconstruction Any age Congenital hypertrophic pyloric stenosis/ Pyloroplasty Any age Congenital intestinal malrotation/ Bowel reattachment + release of peritoneal bands Immediate surgery (when symptomatic) Congenital megacolon/ Radical surgery any age Congenital anal atresia/analoplasty or colostomy 12 hours after birth Anal atresia combined with rectal navicular fossa or perineal fistula/analoplasty >6 months Sacrococcygeal teratoma/ectomy Neonatal period C Motor system: polydactyly/ectomy 6 months~1 year Syndactyly/orthopedics >2 years Congenital dislocation of the hip/closed reduction+brace 0~8 months Closed reduction+plaster Fixation 8 months~3 years old Closed restoration + plaster fixation 3~7 years old Congenital clubfoot/ soft tissue release 1~3 years old Triple-joint fusion >10 years old Scoliosis/ orthopedic surgery >5 years old Post-polio/ soft tissue surgery >5 years old Cerebral palsy/ soft tissue surgery >5 years old Stenosing tenosynovitis of the thumb/ release surgery >2 years old