It is reported on a now 48-year-old male with a multiple endocrine neoplasia (MEN I). The most impressive symptomatology issued from a relapsing organic hyperinsulinism the cause of which were multiple islet cell tumours. Up to now the hyperparathyroidism was not mastered by the removal of two adenomas of the parathyroid gland. As third fact in this clinical picture, called also Hiob syndrome, the hypophyseal manifestation developed in form of a space occupation with a hypersomatotropism, the course and final clarification of which are still open.