From 1977 through 1995, 1,013 thyroid carcinoma patients received treatment and were followed up at Chang Gung Medical Center in Taiwan. To evaluate the prognostic variables of papillary and follicular thyroid carcinomas with limited lymph node metastases, a retrospective review of these patients was performed. Of these patients, 910 had papillary or follicular thyroid carcinoma, and 119 patients were categorized as clinical stage 2 with limited neck lymph node metastases only at the time of diagnosis. The patients were categorized into two groups as no recurrence and local recurrence or distant metastasis at the end of 1997. After the operations, radioactive iodide (131I) treatments were performed in 114 patients and external radiotherapy for neck region or distant metastases in 18 patients. The median follow-up period of these patients was 5.4 years. Clinical variables were coded in our computer for statistical analysis. After the treatments, 93 patients remained disease-free; 10 were in stage 2; 5 in stage 3; and 11 aggravated to stage 4. Of the clinical variables, age, post-operative first 1311 uptake scans, and 1-month post-operative thyroglobulin levels revealed statistically significant differences between the group which improved and the group which did not. During the follow-up period, five patients died; three patients died of thyroid cancer and two died of intercurrent diseases. Patients with papillary thyroid carcinoma revealed a higher percentage of lymph node metastases. Although limited lymph node metastases did not influence survival rate, patients with poor prognostic factors need more aggressive treatment to avoid progression of the cancer.

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