关键词: 神经鞘瘤, 下颌骨, 下牙槽神经

Abstract: 　Schwannomas are mostly derived from the Schwann cells of the peripheral nerve sheath. The tumors are solitary and enveloped, which grow slowly, have clear boundaries with the surrounding tissues and are often benign. Head and neck schwannomas mainly occur in cranial nerves and peripheral nerves, and head, face and tongue soft tissues are the most common; while sympathetic nerves are relatively rare, and neurilemmomas occurring in the mandible are more rare. The early manifestations of this disease are mainly asymptomatic progressive mandibular swelling, and the imaging findings are the shadow of the longitudinal axis of the jaw and the buccal-lingual ossification ring. In the later stage, it can cause numbness of lower lip and atypical imaging characteristics, so it is easy to be misdiagnosed as malignant tumors of mandibular origin. This article reviews the clinical manifestation and history of a schwannoma originating from inferior alveolar nerve, and discusses the clinical features, diagnosis and prognosis of the disease based on literature review.

Key words: Intraosseous schwannoma, Mandible, Inferior alveolar nerve