Objective To discuss the clinical characteristics of Hashimoto's
thyroiditis accompanying with
thyroid cancer.
Methods Clinical data of 98 cases Hashimoto's
thyroiditis accompanying with
thyroid cancer were retrospectively reviewed. Results 2 cases underwent lateral
thyroid lobectomy and isthmus resection. 58 cases underwent bilateral
thyroid lobectomy. 35 cases underwent central
lymph node dissection, with 15 cases of
lymph node positive. 3 cases underwent modified radical
dissection of cervical
lymph nodes and all of them were proved to be
lymph node positive.
Metastasis rate is 25.0% and 52. 2% respectively for
tumors whose diameter was less than 1 cm and greater than 1 cm. The difference has no
statistic significance. Conclusions Hashimoto's
thyroiditis usually accompany with
thyroid papillary carcinoma and cervical
lymph node metastasis can occur even if it's microcarcinoma.
Lymph node metastasis rate increases with increasement of the
tumor's diameter. Total
thyroidectomy should be performed for Hashimoto's
thyroiditis concomitant with
thyroid cancer. And if necessary,
lymph node dissection should be extended to the central region and lateral
neck area.