title: Pathologic quiz case 1. Metastatic undifferentiated carcinoma, lymphoepithelioma type.
mesh_terms: D000293:Adolescent; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D006258:Head and Neck Neoplasms / Q000473:pathology*; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000473:pathology*