Schwannoma of the chorda tympani nerve

Features and management of a schwannoma of the chorda tympani and review of the literature

Intrinsic facial nerve tumors are rare lesions. Among the different histology types, schwannomas is the most frequently reported in literature. Other histological types of facial nerve tumors are hemangiomas, meningiomas, and neurofibromas. Chorda tympani schwannomas (CTSs) are extremely rare entities and are considered as an independent subgroup of facial nerve schwannomas because of their clinical characteristics. The aim of this report is to present the clinical and radiological features and the management of a CTS in a 27-year-old male presenting with conductive hearing loss.

Facial nerve neuroma in the geniculate ganglion extending into the internal auditory canal: A case report

Facial nerve schwannoma is a very rare benign tumor representing less than 1% of intrapetrous lesions. Our patient is a forty-one year old female who has suffered from recurrent right facial palsy for the last six years. She was first misdiagnosed as having Bell's palsy and received corticosteroids which resulted in little improvement. She then had facial nerve decompression surgery which resulted in a partial improvement. Since then, she has suffered from recurrent attacks of facial palsy. Two years ago, she came to our hospital seeking further treatment options. The final diagnosis made by MRI was a possible facial nerve tumor. To obtain a better facial outcome, total tumor removal was performed through the middle cranial fossa approach along with facial-hypoglossal nerve end-to-side anastomosis through transmastoid approach. Her hearing was preserved, and she obtained a better facial outcome than that of her preoperative level. In conclusion, facial nerve schwannoma has the potential to be misdiagnosed as Bell's palsy which might lead to a delay in diagnosis, and end-to-side neurorrhaphy may be an effective alternative in a selected case.

The presenting features of middle ear facial nerve sheath tumors: a clinical review

Facial nerve sheath tumors are the most common middle ear benign neoplasms. Four facial nerve sheath tumors in the middle ear were diagnosed in our department over a 12-year period, and we described our experience in the management of these tumors. A thorough review of the English literature on middle ear peripheral nerve sheath tumors has been conducted, and the findings of this review are presented and discussed. We have paid particular attention to the presenting features of these tumors with the aim of enhancing diagnostic ability.