A RARE CASE OF RECURRENT SINONASAL SCHWANNOMA

Abstract

A rare benign tumour of the peripheral nervous system called a schwannoma can manifest itself in the nasal cavity. In this case study, we describe a rare instance of recurrent sinonasal schwannoma in a 60- year-old woman who had surgery 6 years prior for a sinonasal mass that was later determined to be schwannoma. The patient now exhibits on and off bleeding from the nose for the past 2 years, nasal obstruction, swelling around the nose, and mucopurulent nasal discharge. During inspection, there was swelling in the left dorsum of the nose, extending from the left medial canthus above to the left ala of the nose. A well-dened, heterogeneously increasing soft tissue attenuation lesion measuring 4.6x4x3.6 cm and originating from the left anterosuperior nasal cavity with cribriform plate erosion was seen on the CECT of Nose & PNS. Due to its extension and recurrence, the sinonasal mass was surgically removed using the lateral rhinotomy technique. With nuclear palisading, HPE revealed spindle cell growth and interlacing fascicles. Antoni A and Antoni B have verocay bodies that resemble an ancient schwannoma. At the six-month follow-up, the patient had no symptoms. Sinonasal schwannoma recurrence is quite uncommon. Despite recurrence, the likelihood of malignant change is quite low. The mainstay is total surgical excision.