The solitary cervical lymph node.
D002294:Carcinoma, Squamous Cell; D006258:Head and Neck Neoplasms / Q000175:diagnosis / Q000601:surgery; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis; D012509:Sarcoma; D013127:Spinal Nerves