Glomangiopericytoma of the inferior nasal turbinate: A case report

INTRODUCTION: Glomangiopericytoma is defined as a sinonasal tumor with perivascular myoid phenotype, which was first described in 1942 by Stout and Murray as a soft tissue tumor with characteristic proliferation including branching vessels and small vessel perivascular hyalinization. The tumor accounts for less than 0.5 % of all sinonasal neoplasms. The World Health Organization (WHO) classified this tumor as glomangiopericytoma in 2005. CASE REPORT: A 47 -year-women presented with two years history of permanent left nasal obstruction and frequent epistaxis. Rhinoscopy revealed a friable grayish pink polypoidal mass, fully occupying the left anterior naris. Computed tomography showed a lesion involving the left nasal cavity, with a soft tissue density (70 UH) measuring 50 16 mm, widely infiltrative. Endoscopic surgery was performed to remove the mass, considering the size, limited expansion and the accessible location of the tumor. The immunohistochemistry examination showed positive staining b-catenin tumor cells which confirmed the diagnostic of glomangiopericytoma. After a 2 years follow-up, the patient showed no signs of recurrence. CONCLUSION: Glomangiopericytomas generally arises in the nasal cavity and may extend into the paranasal sinuses. It is categorized as a borderline low malignancy tumor by the WHO classification. Complete transnasal endoscopic excision is the optimal treatment. (C) 2021 The Author(s). Published by Elsevier Ltd on behalf of IJS Publishing Group Ltd.