1991 年 42 巻 3 号 p. 251-254
Serum thyroglobulin (Tg) level was examined pre- and post-operatively in 57 patients with various thyroid tumors. Serum Tg level decreased significantly post-operatively in the carcinoma cases (P<0.001) and in the adenoma cases (P<0.05). In cases of carcinoma, the serum Tg level increased again with the recurrence or metastasis of the carcinoma. Therefore, to measure the level of Tg in post operative following up patients with carcinoma is useful to detect the recurrence or metastasis of the tumor.