CancersNeoplasmNeoplasm by Special CategoryMalignant NeoplasmSecondary Malignant NeoplasmMalignant Neoplasm of Unknown PrimaryCarcinoma of Unknown PrimarySquamous Cell Carcinoma of Unknown PrimaryNeck Squamous Cell Carcinoma of Unknown PrimaryHuman Papillomavirus-Negative Neck Squamous Cell Carcinoma of Unknown PrimarySubtypeHuman Papillomavirus-Negative Neck Squamous Cell Carcinoma of Unknown PrimaryCI-CAN-00007821Explore in graph →NCItC190149 OverviewStatisticsSurvivalGenomicsVariants & evidenceDrugsTrialsResearchRankingsSources & provenance