. Contributions from the Department of Neurology and the Laboratory of Neuropathology (reprints). to within onehalf of an inch of the cortex. In the median portion in itswidest area it projected to the right side, compressing the rightfrontal lobe, including the subcortex directly underneath theprecentral convolution. Posteriorly the tumor compressed on theright side the caudate nucleus and to some extent the anteriorlimb of the internal capsule, but did not press upon the knee andposterior limb. It apparently here had made pressure upon someof the motor fibers coming from the precentral convo
. Contributions from the Department of Neurology and the Laboratory of Neuropathology (reprints). to within onehalf of an inch of the cortex. In the median portion in itswidest area it projected to the right side, compressing the rightfrontal lobe, including the subcortex directly underneath theprecentral convolution. Posteriorly the tumor compressed on theright side the caudate nucleus and to some extent the anteriorlimb of the internal capsule, but did not press upon the knee andposterior limb. It apparently here had made pressure upon someof the motor fibers coming from the precentral convolution. Onthe left side the tumor had compressed out of their proportionaterelations the left caudate nucleus, the anterior limb of the internalcapsule, the lenticula and the anterior portion of the thalamus. TUMOR OF THE FRONTAL SUBCORTEX 265 The anterior limb of the internal capsule formed with the pos-terior limb a right angle and the posterior limb was considerablydistorted. The tumor had obliterated the anterior horns of thelateral ventricles on both sides and extended as far back as the. Photograph of a section through the upper part of the basal ganglia. anterior portion of the third ventricle which was not tumor had destroyed entirely the. anterior and middle por-tions of the callosum. In its widest portion it measured threeand one fourth inches in width and two and one half inchesantero-posteriorly, although it was probable that it extendedfurther by infiltration than was shown by the macroscopic exam-ination. It was a sarcoma. Sections made of the pons and peduncle showed a slight 266 CHARLES K. MILLS secondary degeneration of the pyramidal fibers of the left side. The patient in this case had, in the first place, some of thewell known symptoms of brain tumor, such as are usually presentin a lesion of this description wherever situated. These werepain in the head, vertigo or dizziness, and a blurring of the opticdiscs which probably represented the begi
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