Pediatrics : the hygienic and medical treatment of children . t in infancy. It represents a pri- 492 Diseases of the Nervous System mary new growth of the brain, the tissue repeating the structureof the neuroglia. It is consequently composed of connective tissueand branching cells. Gliomata are not sharply bounded tumors, butare markedly infiltrating, so that the limits of the new growth arevery difficult to determine even upon microscopic may be situated in any part of the brain, but the mostcommon situation is the cerebellum, the pons standing next. Infact, a little the
Pediatrics : the hygienic and medical treatment of children . t in infancy. It represents a pri- 492 Diseases of the Nervous System mary new growth of the brain, the tissue repeating the structureof the neuroglia. It is consequently composed of connective tissueand branching cells. Gliomata are not sharply bounded tumors, butare markedly infiltrating, so that the limits of the new growth arevery difficult to determine even upon microscopic may be situated in any part of the brain, but the mostcommon situation is the cerebellum, the pons standing next. Infact, a little the commonest of all the cerebral new growths in child-hood is glioma of the cerebellum. It must never be forgotten, how-ever, that any part of the intracranial contents may be the site ofthe tumor. Sarcoma stands next in frequency, and indeed is almost as oftenencountered as glioma. Sarcoma of the brain is usually primary,but in rare instances metastatic sarcomata are found in the cerebraltissues. The sarcoma may be of any of the recognized anatomical Fig. 277. Sarcoma of the brain in a girl of 23^ years varieties,—round cell, spindle cell, and so forth. At times a combi-nation of glioma and sarcoma is present in new growths, the lesionin such cases being described as gliosarcoma. The sarcomata of thebrain are often less infiltrating than are gliomata, and sometimesare quite sharply bounded by a fairly definite capsule. They growmuch more rapidly than do gliomata. The most common situationfor sarcoma is the cerebellum, the pons standing next in frequency,then the basal ganglia, and then the cortex. Both gliomata andsarcomata may undergo cystic softening. Carcinoma is very-much rarer in early life than either of the twoforms described above. It is always metastatic and secondary to aprimary carcinoma in some other part of the body. The growth of tumors of the brain usually produces various secon-dary lesions caused by pressure on the contiguous cerebral on the aq
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpediatr, bookyear1917
