This is Episode 39a: Sinonasal II Maxillary and Ethmoid SCC and SNUC Management. In our last episode, we established the anatomic and histologic foundations for sinonasal cancers. Now, we apply that knowledge. This clinical decision-making episode will guide you through NCCN algorithms for maxillary and ethmoid sinus tumors. We'll cover recommending elective neck irradiation, orbital preservation vs. exenteration, and the induction chemotherapy paradigm for SNUC, which has revolutionized the management of aggressive sinonasal tumors. The episode uses two cases to represent the clinical scenarios you'll encounter on oral boards: a resectable maxillary sinus SCC and a SNUC with skull base involvement. By the end, you'll confidently navigate both algorithms.