[Radioimmunological determination of calcitonin (TCT) in the course of thyroid tumor pathology (84 cases)].

The dosage of calcitonin was done in 13 thyroid carcinoma and 71 begnin thyroid tumors. In one case, the preoperative diagnosis of medullary thyroid carcinoma (M.T.C.) was alloved; in one another case of M.T.C. the repeatted dosage allows the evolution survey and the exploration of the family; in a third case, the dosage allows to doubt the diagnosis of M.T.C. in post-mortem. In 71 cases of begnin thyroid tumors, the calcitonin immunoassay is in the normal range. The interest and limits of the preoperative dosage was drawn of this experience.