Prognostic Significance of Tumor-infiltrating Lymphocytes and Anti-programmed Death-ligand 1 Therapy in Sinonasal Mucosal Melanoma: A 10-year Experience at a Single Institution

Abstract

Background and objectivesSinonasal mucosal melanoma (SNMM) is a rare aggressive malignancy that presents with dismal outcomes and a high metastatic propensity. The prognostic factors as well as therapeutic regimens remain largely unknown due to the rarity of SNMM. This study aimed to assess the characteristics of SNMM patients associated with a better prognosis.