Organic and functional nervous diseases; a text-book of neurology . t affected, since it has often been evi-dent that the atrophy was limited to the region nourished by bloodreaching it through one arterial trunk. And this theory has beenrightly supposed to explain the pathogenesis of these cases. Whetherthrombosis or hemorrhage has occurred is not always easy to determine. It has been stated that the various processes of disease have, as auniform result, a condition of sclerotic atrophy. This fact is borne outby the following resume of pathological findings in 343 cases whichhave been gathere
Organic and functional nervous diseases; a text-book of neurology . t affected, since it has often been evi-dent that the atrophy was limited to the region nourished by bloodreaching it through one arterial trunk. And this theory has beenrightly supposed to explain the pathogenesis of these cases. Whetherthrombosis or hemorrhage has occurred is not always easy to determine. It has been stated that the various processes of disease have, as auniform result, a condition of sclerotic atrophy. This fact is borne outby the following resume of pathological findings in 343 cases whichhave been gathered from the records of Kundrat, Audry, Wallenberg,Osier, Wilmarth, Fere, Henoch, Hirt, Fowler, Schultze, Sachs, Rich-ardiere, Bourneville, Fisher, and from recent American and foreignjournals. The conditions found were as follows : MALDEFELOFMENT OF THE BBAIN. 517 Porencephalus, a localized atrophy or agenesis, leaving a cavity inthe cerebi^l hemisphere, which may be deep enough to open into theventricle, 132 cases. Figs. 228 and 229 show this condition. Fig. Congenital maldevelopment of the right hemisphere of the brain, with sclerotic atrophy. (Bailey.) Sclerotic atrophy, an atrophic condition of the brain with an increaseof connective tissue and disappearance of the nervous elements ; affect-ing both hemispheres, or one only, or a part of one only, or limited tosmall areas in various parts, 97 cases. This is the terminal result ofencephalitis (q. v.) and often results from maldevelopment from unknowncauses acting on the foetus. Maldevelopment and apparent atrophic condition of the minutestructures of the hemisphere, chiefly cortical, the cells resembling thoseof a newborn child, but with no apparent gross defects in the brain,32 cases. Atrophy, consequent upon the condition of softening produced byembolism or thrombosis, and limited in extent to certain arterial dis-tricts of the brain, 23 cases. Fig. 226 shows this condition. Meningo-encephalitis, a condition shown by
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