[Anaplastic thyroid carcinoma: diagnosis, treatment and prognosis].

A multivariate study was carried out of prognostic factors for 32 in-patients with anaplastic thyroid carcinoma (1995-2005). Clinicopathological records including stained tissue sections were reviewed, using immunohistochemical methods in doubtful cases. Out of 20 features of prognostic importance, only three proved to affect survival: incomplete removal of tumor, pockets of differentiated cells and pseudo-histiocytic type of anaplastic thyroid carcinoma. No correlation between survival, on the one hand, and tumor size, leukocytic index of intoxication, age, gender, etc., on the other, was found. That might have been due to strict criteria of selection of patients as well as their small number.