38 SMITH ELY JELLIFFE 



Functional icorrelations have not been made with these hyperplasias which 

 will as yet repay more extended analysis. 



Tumors. Tumor diagnosis offers particular difficulties since the de- 

 finitive histological components in the pineal are still under discussion. 

 Marburg preferred to speak of cysts, of teratomata, and all the rest he 

 designated as mixed tumors, but following Horrax (1916) it seems justi- 

 fiable to make a rough grouping of other tumor types, even though the 

 pathological pictures are somewhat confusing or conflicting. Hence we 

 may speak of gliomata with gliosarcomata, sarcomata, carcinomata, psam- 

 moma and mixed tumors. 



Fig. 2. Showing pineal tumor, teratoma, of patient in illustration preceding. 

 Dilatation of ventricles, flattening of corpora quadrigemina. Hydrops of infundibulum 

 to which adiposis genitalis is probably due from interference with hypophyseal reflex 

 arc fibers. 



Gliomata. Feilchenfeld (1885), Reinhold (1886), Schultz (1886), 

 Zenner (1892), Laurence (1899), Duffin (1876), Nothnagel (1888), Kay- 

 mond and Claude (1910), Southard (1905), Marburg (1907), Neu- 

 mann (1901), Verger (1907), Howell (1910, 3 cases), have described 

 tumors of the pineal which they have arranged within the glioma or glio- 

 sarcoma group. They have no special bodily pathology as yet ascer- 

 tainable. 



Teratomata. These constitute the most striking of the tumors of the 

 pineal. Since Weigert's initial description, the discussions concerning 

 their origin have opened up fascinating paths of pathological import which 

 cannot be entered into here. They have been found mostly in the young, 

 nearly all (Neumann excepted) having been observed before the fifteenth 

 year. Wilms (1895) and Askaiiazy (1906) assumed they were related 



