A treatise on the principles and practice of medicine . owish-white. The wallof the focus is irregular in the gray nucleiand regular in the white matter andthreads of bloodvessels run through laden with fat drops, hematoidin and disorganized tissue arefound. As the blood absorbs, the cavity becomes encapsulated by inflam-mation and contains a serous, milky fluid (the apoplectic cyst of Virchow).An apoplectic scar is much less common. Traumatic hemorrhage may occurinfrequently near the point of injury or conire coup on the opposite side;the late traumatic hemorrhage of Bollinger t
A treatise on the principles and practice of medicine . owish-white. The wallof the focus is irregular in the gray nucleiand regular in the white matter andthreads of bloodvessels run through laden with fat drops, hematoidin and disorganized tissue arefound. As the blood absorbs, the cavity becomes encapsulated by inflam-mation and contains a serous, milky fluid (the apoplectic cyst of Virchow).An apoplectic scar is much less common. Traumatic hemorrhage may occurinfrequently near the point of injury or conire coup on the opposite side;the late traumatic hemorrhage of Bollinger takes place after a week ormore, near the fourth ventricle and aqueduct of Sylvius, and probablyin areas of traumatic softening. Brain hemorrhage may sever the internalcapsule. Secondary degeneration occurs in the pyramidal tracts, chiefly froma lesion of the internal capsule; sound and diseased fibers intermingle;it descends through the crus, pons, medulla and cord (the direct anteriorpyramidal tract and part of the crossed lateral tract). These areas. Fig. 55.—Showing course of individual fibers of motor tracts. CEREBRAL HEMORRHAGE 767 become progressively smaller and cease just above the conus children a cerebral lesion may cause degeneration in the anterior hornsof the cord and their fibers. An ascending degeneration occurs onlywhen the large pyramidal tracts of the cortex are diseased, except in theyoung, in whom degeneration of all neurones is prone to follow thedestruction of one neurone. (See figures under Localization in the
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