IT IS NOTABLE that tumors of the nose containing tissue resembling brain tissue are rare. Berger,1 in 1890, was among the first to report such a case. By 1928 only 11 had been found in the literature by Eckert-Möbius,2 and in 1934 Browder and deVeer3 had gathered reports of about 50 cases, including some nasopharyngeal tumors. In 1947 New and Devine4 reported 33 cases of neurogenic tumors gathered over a 27-year period of the Mayo Clinic, only one of which was intranasal.
At present there is disagreement as to the classification and origin of such tumors. They may be classified according to site (intranasal, extranasal, and mixed intranasal and extranasal) or on the basis of the presence or absence of a direct communication with the brain. Bailey and Cushing5 urged that these tumors be classified morphologically according to the predominating type of cell, but Scherer