title: Cervical lymph node metastasis: unknown primary cancer.
mesh_terms: D005500:Follow-Up Studies; D006258:Head and Neck Neoplasms / Q000401:mortality / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D006801:Humans; D008207:Lymphatic Metastasis / Q000628:therapy*; D037981:Neck Dissection; D011879:Radiotherapy Dosage