[Value of the pentagastrin test in familial hypercalcitoninemia].

This report concerns the history of a portugesian family including one case of MEN II a (female, born 1932, presenting medullary carcinoma of the thyroid--MCT--, hyperparathyroidism and suspected pheochomocytoma), and three others with MCT alone or in association with pheochromocytoma. The diagnosis of MCT has been made possible investigating six members of the kindred by use of IR - calcitonin measurements and pentagastrin injection. This provocative screening test is also of interest to follow operated patients.