[Clinico-morphologic properties of so-called adenomas of the thyroid gland and follicular cancer].

As a result of a retrospective clinico-morphological evaluation of the data on 356 cases of thyroid adenoma and 91 cases of follicular cancer, the so-called "colloidal adenomas' (280 cases) were referred to nodular goiter, while parenchymatous adenomas--to early follicular carcinoma. Criteria for identification of cancer were trabecular-microfollicular structure of tumor, solidness of structure, invasion through vessels, node capsule and adjacent tissue, relapse and metastases of tumor and frequently-observed localization of tumor in non-hyperplastic gland tissue.