An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 263.—Acinus of a mammary gland, showing growth of cancer and infiltration of surroundingtissue; a, lumen of acinus with proliferating epithelium; b, epithelia travelling through lymph-chan-nels and infiltrating periglandular tissue (after Waldeyer). lumen in an irregular, abnormal manner. The basemenl^membrane at theblind extremity of the acinus has disappeared and the epithelium has invadedthe periglandular tissue. The drawing shows how the epithelium travels, no. Fig. 264.—Section of peripheral part of
An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 263.—Acinus of a mammary gland, showing growth of cancer and infiltration of surroundingtissue; a, lumen of acinus with proliferating epithelium; b, epithelia travelling through lymph-chan-nels and infiltrating periglandular tissue (after Waldeyer). lumen in an irregular, abnormal manner. The basemenl^membrane at theblind extremity of the acinus has disappeared and the epithelium has invadedthe periglandular tissue. The drawing shows how the epithelium travels, no. Fig. 264.—Section of peripheral part of a rodent nicer (cylindrome): a, columns of epithelia in lymph-channels ; b, small-celled infiltration ; c, small column cut transversely. longer being sharply limited, as before destruction of the basement-mem-brane, but extends in an irregular manner far into the connective tissue inthe form of columns or single cells. The same method of extension occursin cutaneous cancer, where, with the exception of the glands, there is no EPITHELIOMA. 1067 basement-membrane to be penetrated. The majority of cutaneous epitheli-omata start from the epidermis proper, and not from the glandular first the growth is sharply limited, but sooner or later there is invasion ofthe corium and subcutaneous tissue. In the superficial forms there is at first an atypical proliferation of epi-thelium—later, an invasion of the corium, slow at first, on account of thestrong resisting power of the pars reticularis corn, and rapid when the deepertissues are re
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Keywords: ., bookcentury1800, bookdecade1890, booksubject, booksubjectsyphilis
