頸部後発転移症例の転移様相と治療成績

抄録

We analyzed 44 cases of secondary cervical lymph node metastasis in patients with squamous cell carcinoma of the oral cavity and lip from 1974 through 1993. Secondary cervical lymph node metastases were found in 16.3% of N O cases. Metastasis was histologically confirmed at 47 sites. The average number of lymph node metastases was 2.2/site, and the pathological spread of metastatic nodes (level M or more) was found at 20 sites (42.6%). Extracapsular spread was seen at 22 sites (46.8%). Of the 47 sites of metastasis, 39 (83.0%) were controlled, and the overall 5-year survival rate was 61.7%.