Hypoglossal schwannoma masquerading as a submandibular gland tumor: a case report

Abstract

Background: Hypoglossal nerve schwannoma in the submandibular space is rare. This case report presents the treatment of a young patient affected by an unusual hypoglossal nerve schwannoma at the right side of the submandibular region. Case representation: A 31-year-old female presented to our department with complaints of a right-sided submandibular region mass. None calculi was observed by CBCT. An MRI of the neck demonstrating a 18×12mm mass located at the submandibular region. Based on clinical presentation and imaging, a diagnosis of a submandibular gland tumor was conferred and the patient scheduled for excision. Intraoperatively, the mass was noted to arise from the hypoglossal nerve, remaining independent of the submandibular gland. On histopathologic analysis, the mass was determined to be consistent with hypoglossal schwannoma. Conclusion: Though rare, the hypoglossal schwannoma should remain a consideration in the evaluation of a submandibular space mass. During operation, it might be better to explore the mass before managing the submandibular gland.