A 52-year-old woman from Delhi presents with unilateral left nasal obstruction and epistaxis of 2 months' duration. On nasal endoscopy, a single, unilateral, friable, bleeding mass is seen arising from the lateral nasal wall near the maxillary antrum. CT paranasal sinuses shows a heterogeneous mass with bone erosion of the maxilla and lateral nasal wall. Histopathology reveals intact respiratory epithelium overlying a layer of intact epithelium with underlying intact mucosa—an inverted growth pattern. What is the most appropriate next step in management?