[Tumors of the adrenal medulla: nosologic profile and diagnostic technics]

A nosologic re-arrangement of medullo-adrenal neoplasms has been looked for in this article, with particular regard to their common relationship to the complex histogenic system descending from the neuroectoderma-neural crista. The morpho-biologic features of these clinical entities are also reviewed, as well as the up to date laboratory and imaging techniques, with a stress on the high sensibility and specificity levels afforded, e.g., for some of these tumours by selected radio-isotopic examinations, due to their histogenetic, thereby biologic peculiarities.