Journal of Cutaneous Diseases Including Syphilis (Volume 10) (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892. Excerpt: ... Sections from the first tumors examined by me failed to show any connection between the new growth and the epidermis or glandular appendages. Further investigation, however, of the tumors in which a central depression was macroscopically visible revealed a direct downgrowth and proliferation of the epidermis and also of the external root sheath of the hair follicle. (See Plate Figs. 1 and 3.) In these preparations the proliferated basal layer of the epidermis can be seen forming Fig. 4. Section Froh Rodent Ulcer Of The Face, Showing Masses Of Epithelial Cells Resembling Those Met With In Benign Epithelioma. (photo-microoraph By Dr. Fiffard. Gund-Lach, )4 I"; X 50.) the peripherially situated cells of the masses and retaining the same palisade arrangement of the cells as in normal epidermis. The bands, tracts and alveolar like structures of the cell heaps are evidently the result of a proliferation of this layer, while the horny masses represent the physiological tendency of the epidermis to form corneus tissue. The cell heaps in many sections approach the hair follicles so closely that the hair is deflected from its normal course. In Pig. 1 a direct out-growth from the external root sheath of the hair can be seen. Numerous sebaceous glands were observed throughout the sections which were in every respect quite normal and independent of the cell groups described. Normal coil glands and ducts were seen in a few of the sections; they were, however, less numerous than in an equal number of sections from normal skin, while in some of the tumors none were found. The accompanying photo-micrograpb from a section of rodent ulcer is introduced at this place to show the intimate resemblance which the epithelial processes in this affection bear to those of the diseas...