Tumors of the cerebellum / by Charles K. Mills [and others].

Date:
1905
Catalogue details

Licence: In copyright

Credit: Tumors of the cerebellum / by Charles K. Mills [and others]. Source: Wellcome Collection.

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    or deformed. Pressure may also be exerted upon the cranial nerves at the base of the brain. The influence of cerebellopontile growths upon sur- rounding structures has already been discussed. The cerebrospinal fluid is almost always in- creased in cases of cerebellar tumor, because pressure is exerted upon the communication be- tween the lateral ventricles and the fourth ven- tricle, or upon the veins of Galen, which convey the blood from the choroid plexus to the sinus rectus. Because of this internal hydrocephalus undue pressure is brought to bear upon the differ- ent cranial nerves, as the optic and olfactory. The optic chiasm may be directly compressed through pressure from the third ventricle. Alterations in the posterior roots and the pos- terior columns of the spinal cord have been re- corded as occurring in conjunction with tumors of the brain. Such changes have been also found by Dr. Spiller. According to Batten and Collier they are especially present in cerebellar growths, and are due to the increased pressure. Dinkler and Becker believe that toxic or nutritional changes are at fault. Tumors of the Fourth Ventricle, Medulla Oblon- gata, Pons, and Choroid Plexus.—It is not in the province of this paper to consider in extenso neo- plasms of these areas, but inasmuch as these