Teratomas refer to germ cell tumors arising from all 3 germ cell layers: endoderm, mesoderm, and ectoderm with various degrees of differentiation respectively. Congenital teratomas are rare inborn diseases that commonly present early in infancy and rarely beyond 2 years of age. Clinical presenting sites were frequently seen in sacrococcyx, mediastinum, or retroperitoneum in the majority, whereas head and neck teratomas account for only 3% of all teratomas. We describe the first case report of a 3-month-old female infant with the presentation of left cervical mass since birth with a postoperative final diagnosis of immature teratoma WHO grade II after a robot assisted resection via a retroauricular transhairline incision. Postoperative care was uneventful and there were no noticeable adverse events, such as prolonged intubation, nasogastric feeding, signs of neural damage or significant respiratory complications. A surgical scar was concealed behind the hairline and the patient’s family was grateful for the cosmetic results. Follow-up magnetic resonance imaging (MRI) image 1 year later showed no evidence or residual disease of recurrence. We herein consider a retroauricular transhairline approach robotic surgery feasible and practicable for pediatric cervical teratomas, but further studies are needed for verifying this notion. (J Taiwan Otolaryngol Head Neck Surg 2022; 57:129-135)
