The thyroid microcarcinoma is definited differentiated carcinoma of max 1 cm in diameter. We have reviewed clinical and histopathological results of 54 consecutive patients with papillary and follicular thyroid microcarcinoma and operated in the our clinic in the period 1985 to 2004. Several variables, such as older age, multifocality, bilateral disease, and extrathyroidal spread at initial assessment, may have some adverse prognostic significance. We recommend total thyroidectomy accompanied by modified neck dissection if enlarged nodes are diagnosed.