Cervical node metastases from occult primary sites.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006258:Head and Neck Neoplasms / Q000628:therapy*; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis; D008207:Lymphatic Metastasis / Q000628:therapy*; D008297:Male; D008875:Middle Aged