Surgery : its theory and practice / by William Johnson Walsham.

  • William Walsham
Date:
1889
Catalogue details

Licence: Public Domain Mark

Credit: Surgery : its theory and practice / by William Johnson Walsham. Source: Wellcome Collection.

    99/864 page 83
    tar lu the foldfs of the skin. They are also not uncommon in situations where the epithelium is in an abnormal con- dition, as in old scars, white patches on the tongue and mside of the cheek, chi'onic ulcers, warts, and moles. -SYri(d((re.—Squamous-cellcd epitheliomata consist of columns of epithelium, which have grown into the con- nective or other underlying tissue, surrounded by an imperfectly fibrillated stroma, or by a small cell-infiltra- tion. At the same time the epithelium is usually also proliferated outwards, forming a warty excrescence or cauliflower-like gi-owth. Breaking down rapidly ensues, and an epitheliomatous ulcer is the result. Amongst the cells forming the columns of invading epitheUum are found m places small collections of cells of a crescentic shape, arranged concentrically around one or more central rounded cells. These collections, spoken of as cell-nests, are probably due to the more rapid growth of the epithelium at certain spots, the shape and arrangement of the peri- pheral layers of cells being due to their compression be- tween the rapidly-growing central cells and the surround- ing tissues. In the accompanying wood-cut (Fig. IG) the down- I'lo. 16.—Sqiiamous-cclloil epithclionia. gi-owing epithelial columns, a column in transverse section and several cell-nests are seen. Usual seats.—Tongue, lower li]i, cheeks, gums vulva scrotum, penis and anus. ' ' Sirjus.—A squaiiums-cellcd epithelioma usuiiUy ben-ins as a warty tubercle or fissure, wliich snou becomes an ulcer with everted, sinuous and iuduratud I'dgcs, and
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