The pathology and surgical treatment of tumors . FlG. i6.—Petrifaction of a glioma (psammoma) of the brain ; >concrementb; B, calcification of capillaries; deposition of the li 250 (after Perls) : A, large laminatedle-salts in the form of homogeneous ence of the specific influence which is known to produce tyrosis. Atumor may become the seat of infection with the bacillus of tuberculo-sis, and the presence of this specific cause will determine the characterof the regressive metamorphosis. It is only reasonable to assume thatthe atypical vascularization of tumors furnishes a condition favora
The pathology and surgical treatment of tumors . FlG. i6.—Petrifaction of a glioma (psammoma) of the brain ; >concrementb; B, calcification of capillaries; deposition of the li 250 (after Perls) : A, large laminatedle-salts in the form of homogeneous ence of the specific influence which is known to produce tyrosis. Atumor may become the seat of infection with the bacillus of tuberculo-sis, and the presence of this specific cause will determine the characterof the regressive metamorphosis. It is only reasonable to assume thatthe atypical vascularization of tumors furnishes a condition favorable PATHOLOGY OF TUMORS. 47 to localization of floating germs, and consequently constitutes one ofthe causes of auto-infection. Calcification or Cretefaction.—This degenerative process has beenseen in all kinds of tumors and in all the cellular elements, paren-chyma-cells and stroma. By this process a chalky substance is sub-stituted for the is usually preceded by fattydegeneration; at other times itprepares the way for ossi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectneoplas, bookyear1895
