Manual of pathology : including bacteriology, the technic of postmortems, and methods of pathologic research . rosy rarely givesrise to distinctive altera-tions in the kidney; pa-tients affected with thedisease not infrequentl\develop nephritis, proba-blv due to the continuou>secretion of irritants re-sulting from lesions out-side the kidney. Tumors of the kidneyare not common. Of 151)cases collected by were sarcomata, 41carcinomata; his list 21 instances ofcystic degeneration and 11hydatid cysts; there were10 adenomata. Of thesarcomata, seventy-five percent, occur in
Manual of pathology : including bacteriology, the technic of postmortems, and methods of pathologic research . rosy rarely givesrise to distinctive altera-tions in the kidney; pa-tients affected with thedisease not infrequentl\develop nephritis, proba-blv due to the continuou>secretion of irritants re-sulting from lesions out-side the kidney. Tumors of the kidneyare not common. Of 151)cases collected by were sarcomata, 41carcinomata; his list 21 instances ofcystic degeneration and 11hydatid cysts; there were10 adenomata. Of thesarcomata, seventy-five percent, occur in infancy; oc-casionally they are con-genital and may obstructlabor. Some of the sar-comata are histologicallyextremely complex, oftencontaining structures that suggest adenoma or carcinoma, and have been called adenosarcomataof the kidnev. Birch-Hirschfeld has especially called attention to suchneoplasms.^ .?\iio)uata, Iciomyomata, and rhahdomyomata of the kidneyare rare. Angiomata have been observed: they sometimes involve thepyramids or the pelvis, and may give rise to troublesome l-iG. 327.—Tuberculous Pvelonephritis; Tuberculosis OF THE Specimen shows cavities in medullary and cortical portions of theorgan, due to the extension of tuberculosis from the pelvis. Deut. med. Woch., vol. xxiv. p. .\^ .Mharran and ImViert. Tunieurs du Rein. See also Strong. Arch, of Pediatrics. May, 1003. pMed. Annals, Aug., iqo^, p. 444- 662 SPECIAL PATHOLOGY. Papilloma^ of the pelvis of the kidney may be extremely small, butattended by hemorrhages that prove fatal; it is usuallv of the villoustype. Probably the most frequent tumor of the kidney is the hyperne-phroma, a neoplasm arising from ectopic adrenal tissue. Of the 163hypernephromata collected by Ellis,^ 157 were in the kidney. Thereis no special predilection for either side; the tumors are usually soft,sometimes cyst-like. The neoplasm is often sharply outlined from con-tiguous tissue, a
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