An American text-book of genito-urinary diseases, syphilis and diseases of the skin . rt or requiring a con-dition of inflammation to precede the invasion, as is shown particularly inconnection with secondary invasion of the skin following mammary car-cinoma, and also in some cases of slowly-progressing superficial discoid epi-thelioma the circulatory disturbance is very slight. Lymph-gland infection never occurs in rodent ulcer, and sometimes asuperficial flat epithelioma may exist twenty years or longer without invadingthe lymph-glands. When the disease is situated upon the penis, lips, cert
An American text-book of genito-urinary diseases, syphilis and diseases of the skin . rt or requiring a con-dition of inflammation to precede the invasion, as is shown particularly inconnection with secondary invasion of the skin following mammary car-cinoma, and also in some cases of slowly-progressing superficial discoid epi-thelioma the circulatory disturbance is very slight. Lymph-gland infection never occurs in rodent ulcer, and sometimes asuperficial flat epithelioma may exist twenty years or longer without invadingthe lymph-glands. When the disease is situated upon the penis, lips, certainparts of the face, or just in front of the ear, infection is certain to occur, andtakes place, as a rule, earlier than when the lesion is seated upon the nose,ear, or eyelid. From these general considerations let us consider the manner in which 1066 NEW GROWTHS. the disease extends at the seat of a primary lesion. In Fig. 263 is shownthe manner of extension in mammary carcinoma. The drawing represents aterminal acinus, and shows the epithelium filling up the greater part of the. 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
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Keywords: ., bookcentury1800, bookdecade1890, booksubject, booksubjectsyphilis
