AMAarchives of neurology & psychiatry . athof both optic nerves without destroying the tissuerelationships. This case, one of the typical tumorsarising from the olfactory groove, an example ofwhich was pictured by Cruveilhier. was first reportedin my monograph The Pituitary Body and Its Dis-orders. Philadelphia, W. B. Saunders Co., later on from it? ophthalmological aspects withC. B. Walker: Arch. Ophth. 45:427 (Sept.) 427. 5. In an article with Lewis H. Weed (,loc cit.)we described and figured one of the endotheliomasof this series in which there were deposits of truebone, no
AMAarchives of neurology & psychiatry . athof both optic nerves without destroying the tissuerelationships. This case, one of the typical tumorsarising from the olfactory groove, an example ofwhich was pictured by Cruveilhier. was first reportedin my monograph The Pituitary Body and Its Dis-orders. Philadelphia, W. B. Saunders Co., later on from it? ophthalmological aspects withC. B. Walker: Arch. Ophth. 45:427 (Sept.) 427. 5. In an article with Lewis H. Weed (,loc cit.)we described and figured one of the endotheliomasof this series in which there were deposits of truebone, not only in tlie tumor but also in the arachnoidelsewhere. Fig. 8.—Microscopic low-power draw-ing through entire thickness of tumor. CCSHIXG-CKAXJAL HVPEROSTOSES 149 The twenty examples of hyperostosis in the series of eightv endo-thehomas represent one in four, but unquestionably this is too smalla percentage .f one takes into consideration the cases in whici a ^^ ,s observed on the inner surface of the skull alone. In nfost. ;:u faceMe^^; ° - -«™-«. show!,,, iu of the tumors of spherical type the point of origin of the growth o,n the men,nges is clearly apparent. At this central core of he tn„.r the dura ,s apt to be indented by a slight endostosis, often too 150 ARCHIlliS OF XEUROLOGY AXD PSVC/ILiTRV small to be recognized by the roentgen ray and in the operative notesof this long series of cases the jjarticular fact may not always havebeen recorded. In short, the tumors do not always behave alike in their effect onthe bone. In some cases, aside from the increased vascularity withwidening of the diploetic venous channels owing to stasis, there isno apparent change. In others, the bone may become greatly thinned
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