Transactions of the American Association of Obstetricians and Gynecologists for the year ... . no structure of any kind found inthis, only a mass of broken-down necrosed tissue. Whether itwas once composed of tissue like that just described or normalrenal tissue is a matter of conjecture. However, we do find someof this atypical glandular tissue in the outer covering of the mass(see Fig. 5). This may indicate that this necrosed mass mighthave been of the same structure at one time. Sections from the 220 J. GARLAND SHERRILL. nodule on the body of the kidney show the same structure asdetailed ab
Transactions of the American Association of Obstetricians and Gynecologists for the year ... . no structure of any kind found inthis, only a mass of broken-down necrosed tissue. Whether itwas once composed of tissue like that just described or normalrenal tissue is a matter of conjecture. However, we do find someof this atypical glandular tissue in the outer covering of the mass(see Fig. 5). This may indicate that this necrosed mass mighthave been of the same structure at one time. Sections from the 220 J. GARLAND SHERRILL. nodule on the body of the kidney show the same structure asdetailed above, except that there are no areas of necrosis, andother fields are found presenting an entirely different picture. Wehere find the bloodvessels surrounded by many layers of cells(see Figs. 6 and 7). These cells have a clearer protoplasm offewer granules than the epithelial cells of the rest of the growth;their nuclei are larger and contain distinct nucleoli. I take itthat these cells are of connective-tissue type and originate fromthe adventitious coat of the bloodvessels. We have here a. Fig. 7. typical picture of what Zeigler(28) calls a perithelioma, avariety of hemangiosarcoma in which there is a proliferation ofthe outer layers of the wall of the bloodvessels and their im-mediate surroundings, so that the vessel lumina are surroundedby more or less thick mantle of cells. The location of the morbid growth, upon the surface and underthe capsule, for the most part would lead one to think that wehad to do with an hypernephroma. The microscopical findingsdo not bear out this view. The character of the cells in anhypernephroma is entirely different from those found in thisgrowth. In the first, the cells are like those in the cortical por-tion of the adrenal gland—large cells with clear protoplasm and ADENOCARCINOMA OF THE KIDNEY. 221 small nucleus arranged in columns on each side of a capillarynetwork. The preponderance of atypical tubular gland tissue, arapid proliferation
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