2018 Volume 61 Issue 3 Pages 162-168
We report the case of a 37-year-old male patient with a schwannoma arising from the nasal and paranasal sinus. The patient presented with the complaint of right nasal obstruction. Fiberoptic nasopharyngolaryngoscopic examination showed a tumor located in the right nasal cavity. CT and MRI examinations showed an obstructive mass in the posterior part of the right nasal cavity. We suspected schwannoma from the biopsy findings. The tumor was removed completely by endoscopic sinus surgery. Based on the positive result of immunohistochemical testing for S-100 in the resected specimen, the tumor was diagnosed as an Antoni type A and B neurinoma. There was no evidence of malignancy. The patient has shown no evidence of tumor recurrence or neurological deficit after the operation.
While most of Schwannomas occurring in the head and neck region are known to arise from the acoustic nerve, it is difficult to identify the nerve of origin of schwannomas arising from the nasal and paranasal sinuses. Patients usually show no recurrence or neurological deficit after complete resection of a schwannoma via the transnasal endoscopic approach. We select the best approach to resect neurinomas, so as to be able to remove schwannomas with the capsule under clear visualization. This could be the reason for the low rate of tumor recurrence at our institution.
