Editorial: Virtual surgical planning and 3d printing in head and neck tumor resection and reconstruction

During the past two decades, we have witnessed rapid development of technology in the field of surgery. With the advancement of virtual surgical planning and medical threedimensional (3D) printing (additive manufacturing), computer-assisted surgery (CAS) has revolutionized head and neck surgery and craniofacial surgery, leading to a new era of "digitalization and precision surgery" (1). CAS may refer to one or a combination of the following technologies: virtual surgical planning, navigation, 3D modelling, patientspecific surgical template/cutting guides, patient-specific implants, virtual reality (VR)/ augmented reality (AR)/mixed reality (MR), and artificial intelligence (AI).