What dose and fractionation would you use for definitive intent radiation therapy for a metastatic melanoma of the maxillary sinus?

Paranasal sinuses (PNS) are common sites for primary mucosal melanoma of the H&N, which is itself a rare entity in comparison with their cutaneous counterpart but of even more aggressive nature. Thus, I wonder if this is actually not a metastatic setting you're facing. Even if there were other melan...