Intraoperative Embolization : Key Step in the Resection of Sinonasal Hemangiopericytoma

Abstract

Sinonasal hemangiopericytoma (SNHPC) is a rare mesenchymal neoplasm characterized by perivascular myoid differentiation and a distinctive “staghorn” vascular pattern. Although complete surgical excision remains the primary treatment modality, the decision to perform surgery must be made with caution due to the significant risk of intraoperative bleeding associated with the tumor’s high vascular profile and its complex anatomical location within the sinonasal region. This case report highlights the importance of thorough vascular assessment, including presurgical embolization, in preventing massive intraoperative hemorrhage during the resection of sinonasal hemangiopericytoma.