Side effects of CT-guided implantation of I seeds for recurrent malignant tumors of the head and neck assisted by 3D printing non co-planar template.

Background: For the recurrence of head and neck cancer after operation and radiotherapy, the local control of radioactive seed implantation is good, and it has a certain palliative effect. This study aims to investigate the acute and late side effects of a three-dimentional printing non co-planar template (3D-PNCT) for computed tomography (CT)-guided radioactive I seed (RIS) implantation in recurrent cancer of the head and neck.

Methods: Between January 2016 and December 2016, forty-two patients with local recurrent malignant tumors of the head and neck received 3D-PNCT-assisted RIS implantation.