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[Cervical nodal metastasis of occult primary carcinoma].

Thirty three patients of cervical nodal metastasis from unknown primary were reported and discussed. They admitted Niigata Cancer Center Hospital since 1964 to 1983.1. Limited to the twenty two patients who were treated by otolaryngological department, the incidence of unknown primary was 2.7%.2. In 6 cases primary sites were detected. Five cases of them were tumors of head and neck origine and another was a tumor of infraclavicular region origin.3. Histological diagnosis of metastatic nodes were squamous cell carcinoma (51.5%) carcinoma simplex and anaplastic carcinoma (24.2%) and the others (24.3%).4. Crude survival rate was 15.6% (3 year) and 10.0% (5 year). No one survived whose metastasis occurred in the supraclavicular lymph node and/or whose primary site was found after the initiation of the therapy. Difference of survival rate was not detected between neck dissection with radiation group and excision or biopsy with radiation group.