Abstract: Objective To explore the surgical effect and treatment experience of resection of nasal dermoid and sinus cysts(NDSC)in children. Methods The clinical data of eight children with NDSC were retrospectively analyzed, including five boys and three girls. All children underwent CT of the nasal sinus and those with large lesions involving the skull base underwent MRI of the nasal sinus at the same time. All patients underwent endoscopy-assisted surgery. Different surgical approaches were designed according to lesion location and nasal aesthetic subunit with reference to imaging. Medical history, clinical manifestations, imaging, incision, lesion characteristics, surgical methods and follow-up were analyzed. Results Among the eight cases, five cases were associated with nasal bone absorption or nasal septal cartilage absorption, two cases were deep to the anterior skull base, two cases had two fistula orifices, one case had two branches in the deep part of the fistula, all children were operated smoothly, and one case underwent surgery again due to local scar hyperplasia. Patients were followed for 3-60 months without recurrence. Conclusion Children with NDSC should be operated on as soon as possible after discovery. The surgical approach should be individualized. The use of endoscopic-assisted surgery can completely remove the lesion and reduce the damage, taking into account the need for cosmesis.

Key words: Nasal dermoid and sinus cysts, Children, Fistula, Dermoid cyst, Deformity