A Case Report of Granular Cell Tumor of the Left Mandibular CanalXing-Hong Zhou MD, Zheng-Da Zhu MD, Yue Yan MD, Rui-Juan Zhang MD, Shi-Min Chang MDDepartment of Stomatology, Beijing Friendship Hospital, Capital Medical UniversityCorrespondence: Shi-Min Chang, Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China.Email: changsm2005@163.com