[Contribution to the pathogenesis of intrasellar and intraventricular cysts (author's transl)].

The histological structure of Rathke's cyst having an epithelial mono- or multiple layer wall with glands and mucous secreting cells is indicative of their origin from the stomodaeum. These cysts are morphologically and genetically simialr to the so-called cysts of the foramen of Monro (colloid cysts of the third ventricle). According to Stochdorph, the origin of the latter cysts is from ectopic cerebral inclusions of the upper respiratory tract.