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.