ABSTRACT
Primary adenocarcinomas of the enteral type in the nasal-ethmoid region are rare, but owing to their unusual location they have been reported a number of times. According to F. Feyrter, the Helle Zellen organ of the nasal mucosa is under ideal argyrophobic conditions. Feyrter postulated the existance of a system of disseminated endocrine cells in the mammalian organism. O. Jarvi assumes a congenital endodermal dispersion of germ cells in Cohnheim's sense, a heterotopia of islands of intestinal mucosa in an embryological ecto-endocermal border area. Only with Sevier-Munger silver impregnation were the blackish silver granules of the mucoargyrophilic amphicrine cells found in some goblet cells. The chapter presents D. Stark's comment very convincing that precise classification of the enteric tube cannot be based on genetic considerations exclusively because, in the course of individual development, boundary movements and displacements must be taken into account.
