Abstract:Objective:To evaluate the rate of residual tumor after local resection of thyroid carcinoma, and provide theoretical basis to determine the indications for re-operation.
Methods :The clinical data of 56 patients, who had re-operation in our hospital after local resection of thyroid carcinoma, were summarized.
Results:As confirmed by pathology, the rate of residual tumor of patients was 42.8% at re-operation. When the tumor was larger than 4 cm, or smaller than 2 cm before the first operation, the residual tumor rate was 80% and 11.1% respectively. The residual tumor rate was 86.3% in patients with tumor invading thyroid capsule, 14.7% in patients without capsule invasion, 47.6% in patients who had only nodule resection, 50% after ipsi-lateral partial lobectomy, and 12.5% after subtotal thyroidectomy. The sensitivity of finding residual tumor by CT and doppler ultrasound examiination before re-operation was 64.0% and 60.0% respectively, and the positive predictive value was 80.0% and 30.0% respectively.
Conclusions:The rate of residual tumor is high in patients with thyroid cancer operated by local resection. And it′s necessary to re-operation. The condition of tumor before the first operation and CT examination are significant for selection of patients to have re-operation.