分化良好型甲状腺癌生长缓慢，在治愈性切除术多年后可见复发，再予切除仍可获得治愈的机会，迄今尚未找到预示复发的指示物。作者注意到在生理情况下仅能检出少量甲状腺球蛋白（TG），而甲状腺肿瘤无论是原发或转移的均能分泌大量TG，就此随访了194例分化良好型甲状腺癌，全部 Well-differentiated thyroid cancer grows slowly. After many years of curative resection, it shows recurrence. Re-excision still has the opportunity to cure. So far no indicator of recurrence has been found. The authors note that only a small amount of thyroglobulin (TG) can be detected under physiological conditions. While thyroid tumors can secrete large amounts of TG regardless of whether they are primary or metastatic, 194 well-differentiated thyroid cancers were followed up.