Schwannoma Originating From the Nasal Septum

Nasal Cavity Schwannoma-A Case Report and Review of the Literature

Schwannomas are rare slow-growing benign tumors arising from Schwann cells lining the nerve sheaths. Head and neck schwannomas account for about one-third of all cases, and only 4% of them arise from the sinonasal tract. Its diagnosis is based on histology and immunohistochemistry. Complete surgical excision is the most recommended treatment option, and endoscopic surgery has been widely performed in recent years. In this study, we presented a case of a 55-year-old female with schwannoma arising from the lateral wall of the nasal cavity, causing epistaxis and rhinorrhea. The patient underwent endoscopic excision with prompt resolution of symptoms. The reported cases of nasal cavity schwannoma were reviewed and summarized for educational purposes.

Schwannoma of the sinonasal tract: case report with review of the literature

Schwannomas of the sinonasal tract are rare, accounting for <4% of head and neck schwannomas. We report the case of a 61-year-old male who presented with unilateral nasal symptoms. Examination and imaging revealed a unilateral polyp at the level of the middle turbinate, with an initial biopsy suggestive of an inflammatory polyp. Due to the persistence of the patient's symptoms and his polyp despite medical therapy, endoscopic nasal polypectomy was performed. The histology surprisingly showed a schwannoma. No further interventions were carried out, and the patient remains disease-free 6 months postoperatively. A review of the literature comprising 60 cases is included. An optimal clinical approach to the investigation and management of schwannomas of the sinonasal tract is subsequently discussed.

A Rare and Unexpected Reason for Unilateral Epistaxis: Nasal Septal Schwannoma

Nasal septal schwannoma is a rare tumor. It causes complaints such as nasal congestion, nosebleeds, and headaches. There are many diseases such as nasal polyps, antrochoanal polyp, chronic rhinosinusitis, concha bullosa, inverted papilloma, and retention cyst with schwannoma diagnosis. The diagnosis is made histopathologically, and the treatment is surgery. In this case report, we presented a male patient with septal schwannoma who had nasal obstruction for a year and reviewed the last 20 years of literature on nasal schwannoma.

Schwannoma of the Membranous Nasal Septum: a Clinical Report With Aesthetic Approach

Schwannoma is an uncommon tumor of nerve sheath that arises from any peripheral, cranial, or autonomic nerve. Only 4% of head and neck schwannomas originate from the sinonasal tract, and a finding of a schwannoma in the nasal septum is exceedingly rare. The authors experienced nasal septal schwannoma with the functional and aesthetic consideration of nasal contour. The authors present an open rhinoplasty approach for nasal septal schwannoma which has not been reported in the previous literature yet.

Differential Diagnosis Between Nasal Septal Schwannoma and Nasal Septal Neurofibroma

Recently, as the authors experienced nasal septal schwannoma and nasal septal neurofibroma with similar clinical symptoms but different endoscopic findings, the authors tried to review all the literatures previously reported on the "Nasal septal schwannoma and Nasal septal neurofibroma." The aim of this study is to thoroughly review previously reported patients with nasal septal schwannomas and neurofibromas and to describe similar and different features focusing on the differential diagnosis between the 2 entities. On the basis of our review, the authors made some important conclusions. First, benign peripheral nerve tumors originating from the nasal septum are uncommon. Especially, nasal septal neurofibroma is extremely rare that only 5 patients were reported. So, more clinical reports of benign peripheral nerve tumors are necessary to elucidate the differences between nasal septal schwannoma and nasal septal neurofibroma. Second, there are some similar features between nasal septal schwannoma and nasal septal neurofibroma such as clinical symptoms, endoscopic findings, and treatment strategy. However, since there seem to be some differences in nasal endoscopic findings, they may be helpful for the provisional diagnosis, and so more patients should be reported to verify that point. Third, image study, especially magnetic resonance imaging (MRI), is considered to be a useful tool for differential diagnosis of benign peripheral nerve tumors originating from the nasal septum. So, more clinical reports reporting MRI findings are needed to verify the differences. Last, because of distinctive histologic appearances of benign peripheral nerve tumors, it is usually not difficult to make the distinction between nasal septal schwannoma and nasal septal neurofibroma. However, immunohistochemical stains including S-100 protein, calretinin, CD 34, factor XIIIa, and CD56 are necessary when it is difficult to differentiate between 2 disease entities.

Nasal Septal Schwannoma: Advances in Diagnosis and Treatment

The nasal septum is one of the rarest sites of origin of schwannomas. Recently, as the authors experienced a patient with nasal septal schwannoma completely removed by transnasal endoscopic approach, the authors tried to review all the literatures reported since Berlucchi's report in 2000. To the best of our knowledge, only 18 patients with nasal septal schwannoma in the literatures written by English-language have been reported. The purpose of this study is to describe our recent experience and thoroughly review our collected patients with nasal septal schwannoma with particular emphasis on therapeutic options. Additionally, it is to describe the changes in clinical symptoms, diagnosis, and treatment of nasal septal schwannoma by comparing our data with Berlucchi's data. Based on our review, the authors suggest some conclusions. First, since common symptoms were nonspecific like other intranasal tumors, the authors should keep in mind that nasal septal schwannoma is included in the differential diagnosis of unilateral nasal mass pathologies with a high degree of suspicion on the basis of the endoscopic findings. Second, although there is no diagnostic computed tomography (CT) finding of nasal septal schwannoma, CT scan with contrast enhancement is helpful in defining the origin and location of the tumor and the involvement of vital structures. Third, combined immunohistochemical staining for S-100 protein, calretinin, and CD56 in addition to the light microscopic findings can be very useful as a simple, easy, and reliable method for definite diagnosis. Last, transnasal endoscopic surgery is the most suitable approach for treating any size and location of nasal septal schwannomas.