Sinonasal Schwannoma - A Case Report

Sinonasal Schwannoma: A Case Report

Schwannomas are benign tumours of the peripheral nerve sheath that can develop anywhere in the body. In the nasal cavity, they hardly ever happen. Lesions known as paranasal schwannomas make up fewer than 4% of all head and neck schwannomas. Here, we present a case of sinonasal schwannoma in a 24-year-old male who had been experiencing nasal obstruction and loss of sense of smell for the previous 2 years. The lump was successfully removed without any postoperative complications.

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.

Encapsulated Sinonasal Schwannoma Mimicking an Antrochoanal Polyp

Extracranial schwannomas are uncommon neoplasms of the sinonasal tract arising from peripheral nerve shealth. Mostly acapsulated on histology, but few cases of encapsulated schwannomas have been reported. Its symptoms are nonspecific and initial clinical diagnosis is frequently missed. We report a 13-year-old boy with a huge, encapsulated sinonasal schwannoma initially thought to be an antrochoanal polyp. Computed tomography scan demonstrated a huge irregularly shaped mildly enhancing isodense mass in the right nasal cavity with lateral extension to the ipsilateral maxillary sinus, superior extension into the ethmoids and frontal sinuses and posteriorly into the nasopharynx. The tumour was completely excised via a lateral rhinotomy and patient is still on follow-up.

Large Sinonasal Schwannoma with Skull Base Defect: A Case Report

Unilateral sinonasal masses account for 6% of all paranasal sinus pathologies. We are reporting a case of nasoethmoidal schwannoma with a large skull base defect. The lesion was removed endoscopically along with repair of the defect. We are highlighting the challenges faced in diagnosis and mangement of this case with an emphasis that these tumours should be considered as one of the differential diagnosis in presence of a unilateral nasal mass.