Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . cle of the brain, when softened, might easily be mistakenfor a gummatous deposit. The examination of the viscera, the history TUMORS OF THE BRAIN AND ITS ENVELOPES. 339 of the case, and a microscopical cxaniiiiation, would dispel any suciielements of doubt. 3. The brain or its envelopes may become the seat of carcinoma orcancerous growths. Scirrhus and encephaloid are the more commontypes. Occasionally the melanotic variety is
Lectures on nervous diseases from the standpoint of cerebral and spinal localization, and the later methods employed in the diagnosis and treatment of these affections . cle of the brain, when softened, might easily be mistakenfor a gummatous deposit. The examination of the viscera, the history TUMORS OF THE BRAIN AND ITS ENVELOPES. 339 of the case, and a microscopical cxaniiiiation, would dispel any suciielements of doubt. 3. The brain or its envelopes may become the seat of carcinoma orcancerous growths. Scirrhus and encephaloid are the more commontypes. Occasionally the melanotic variety is detected. Old age seemsto be a factor in the development of cancer of the brain in most may start either in the brain-substance, the meninges (chiefly in thepia), or in the bony skull-cap. The size and rapidity of progress of carcinomata of this regiondepends upon ihe type. The encephaloid variety grows rapidly, is veryvascular, and may attain an immense size. The scirrhous type is ofslower growth, and is less vascular. 4. Regarding other varieties of cerel)rul tumors which have been•numerated iu tlie preceding table (page 218), it does not seem to me. Fig. 89.—Cerebral Glioma. necessary to describe the microscopical appearances of each, because mostof the works on pathology afford all necessary information respectingthem. It may be well, however, to mention a few facts pertaining toeach which possess a clinical value. Cysts of the brain are generally the result of an old apoplectic clotwhich has undergone certain morbid changes already described. Glioma are formed of connective-tissue elements of the brain ; hencethey are usually developed in the substance of the organ. Epithelial growths may spring from the cerebral vessels or the wallsof the ventricles, as well as from the cells of the pia and arachnoid. Thisstatement does not comprise those epithelial tumors which are properlyclassed as cancerous. 340 LECTURES ON NERVOUS DISEASES. Fsammoma or sand-tumoi-K cons
Size: 1589px × 1573px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, bookidlecturesonne, bookyear1888
