A system of surgery : pathological, diagnostic, therapeutic, and operative . ut are apt to attain an extraordinary size. Of theexciting causes of warts, nothing is known ; they often occur in several membersof the same family, and instances are observed in which they betray a hereditarytendency. A wart is a hard, insensible excrescence, generally of a conical shape, moreor less movable, and attached by a broad base, although sometimes the reverseis the case, the union being effected by a very narrow pedicle ; its surface isrough, fissured or tuberculated, and usually a few shades darker than t
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A system of surgery : pathological, diagnostic, therapeutic, and operative . ut are apt to attain an extraordinary size. Of theexciting causes of warts, nothing is known ; they often occur in several membersof the same family, and instances are observed in which they betray a hereditarytendency. A wart is a hard, insensible excrescence, generally of a conical shape, moreor less movable, and attached by a broad base, although sometimes the reverseis the case, the union being effected by a very narrow pedicle ; its surface isrough, fissured or tuberculated, and usually a few shades darker than the adjacentskin; its size seldom exceeds that of a common pea. When cut, it is painful, and bleeds somewhat. Its structure is essentially cellulo-fibrous. The fluid whichfollows a section of a body of this kind, has been supposed, but erroneously, to becontagious, or inoculable. A wart on the face, arm, or shoulder sometimes be-comes the seat of carcinoma, especially when it is constantly rubbed or irritated. 676 DISEASES OF THE SKIN AND CELLULAR TISSUE. CHAP. I. Fig. 191.. The treatment of warts is very simple. In young persons, in fact, they oftendisappear spontaneously. The best local remedy is chromic acid, with equalparts cf water, applied with a glass brush. It instantly turns the skin black, and forms an eschar, which drops off in six or eight clays, leaving a healthy, granulating sore, which soon heals. Tincture of iodine, acetic acid, bichlorideof mercury, and sulphate of copper, also, answer an excellent purpose. When averrucous diathesis exists, recourse must be had to the exhibition of arsenic, orDonovans solution. Excision is necessary when a wart displays a tendency tomalignancy. 2. SEBACEOUS TUMORS. The sebaceous tumor, essentially consisting of an enlargement of a sebaceousgland with a retention of its secretion, has been described under various names, founded either upon the character of its walls, the fancied nature of its contents, or the kind of structure in w^hi