Introduction
Granular cell tumor (GCT) is a rare tumor observed in the clinic. GCT was first described in 1926 by Abrikossoff and therefore, also called Abrikossoff’s tumor [1]. GCT can involve any part of the body, but in most cases, it localizes in the head-and-neck region, especially the tongue [2]. No previous study of GCT occurring in the mandibular canal has been reported. Thus far, the histogenesis and pathological nature of GCT are controversial. Based on immunohistochemical labeling and ultrastructural studies in recent years, most scholars believe that this tumor originates from Schwann cells of the nerve sheath. Herein, we report the case of a patient with GCT of the left mandibular canal.