Xanthoma.
Xanthoma (also called vitiligoidea and xanthelasma) is a connective-tissue new growth, characterized by the formation of yellowish, circumscribed, irregularly-shaped, variously-sized, non-indurated, flat or raised patches or tubercles. Two varieties are met with. The macular, or flat form (xanthoma planum) is commonly seen upon the eyelids, looking not unlike pieces of chamois-skin inserted in the lids. This form may also be encountered occasionally on other parts of the face, as well as upon the body. The patches are smooth, opaque, usually sharply defined, and to the touch soft and apparently normal in texture; they are on a level with the surrounding integument or slightly raised, and of a creamy or yellowish color. They vary in size and shape, and may coalesce, forming a band extending across the eyelids, especially the upper lids. The tubercular form (xanthoma tuberosum) is usually met with upon the neck, trunk, and extremities, the eyelids seldom being invaded. It occurs as small, isolated nodules, or in patches slightly raised above the level of the skin, consisting of aggregations of tubercles of the size of a milletseed or larger. Both forms of the disease not infrequently occur in the same individual. After reaching a certain development it is apt to remain stationary throughout life, and with no involvement of the general health. As a rule, the lesions are few in numbers; on the other hand, rarely they may be numerous (xanthoma multiplex). The affection is usually encountered in middle and advanced life, although it is occasionally met with in the young. It is more common in women than in men. Jaundice has been frequently noticed as preceding or accompanying it, especially the tubercular variety. Pathologically, it is a connective-tissue new growth with fatty degeneration. Excision, where practicable, constitutes the sole method of treatment.
Myoma.
Myoma cutis, or dermato-myoma (known also as liomyoma cutis), is a rare affection, consisting of tumors of the skin composed of muscular fibres. They occur either as single or multiple tumors, varying in size from a lentil to an egg, localized in a special region, as the nipple, scrotum, labia majora, thigh, hand, or foot; or, more rarely, numerous, and scattered over the greater portion of the whole body. They are either flat or pedunculated, rounded or oval in form, pale-red in color, with a smooth surface; although generally painless, they are sometimes tender upon pressure, The growth consists essentially of a new formation of unstriped muscular fibres. At times it is composed largely of connective tissue (fibromyoma), or it may contain an abundance of blood-vessels, giving rise to cavernous erectile tumors (myoma telangiectodes). The disease is benign.
Angioma.
Angioma, or nævus vasculosus, is a congenital formation composed chiefly of blood-vessels and having its seat in the skin and subcutaneous tissue. Several forms of the affection are met with, all of which, however, may be grouped under two heads—non-elevated and prominent. The former (nævus flammeus, nævus simplex, angioma simplex) is illustrated by the so-called port-wine mark, or claret-stain, known in German as feuermal, and in French as tache de feu. The prominent variety (angioma cavernosum, nævus tuberosus) may be turgescent, erectile, pulsating, tumor-like, circumscribed growths, with an uneven or rugous surface. In shape nævi are usually roundish, but may be irregular; in color, bright or dark red, violaceous, or bluish; and in size as large as a pea or a bean, or in some cases involving areas several inches in diameter. As a rule, they are single formations. They may occur on any part of the body, but are most frequently seen about the face. Their course varies. In many instances, after attaining a certain size, they remain stationary, or in some cases may retrograde or undergo spontaneous involution, this remark applying more particularly to the flat variety in early life. Ordinarily, they are permanent deformities. They become pale under pressure, and the more prominent growths are markedly compressible. Anatomically, the growth consists of a dilatation and hypertrophy of the arterial and venous blood-vessels of the corium and subcutaneous tissues, and in some instances there is increase in connective tissue. In some cases the connective-tissue hypertrophy is made up mainly from the adipose layer (angioma lipomatodes). Occasionally there may be more or less pigmentation.
In the treatment, the extent, form, and region involved are to be considered. Various methods have been advised for their removal. For pinhead-sized nævi puncturing with a red-hot needle, or with a needle charged with nitric or chromic acid, may be employed. Those of pea size may be treated by caustic applications. Sodium ethylate, as recommended by Richardson, is an efficient caustic for the more superficial forms: it should be pure and applied with a glass rod; a dry dressing is to be employed and the crust permitted to loosen itself. Painting a nævus with liquor plumbi subacetatis will, if repeated daily for several weeks or months, sometimes succeed. Caustic potash in solution, from one to two drachms in the ounce, and nitric acid, may both be cautiously used. An ointment of a drachm of adhesive plaster and nine grains of tartar emetic applied to small nævi will, according to Neumann, cause free suppuration and healing. A solution of eight grains of corrosive sublimate in a drachm of collodion is sometimes effective. Injections of astringent and irritating liquids, such as the tincture of the chloride of iron and cantharidine, as formerly practised, possess no advantage over safer methods. Linear and punctate scarifications—in the latter the needles being charged with a 50 per cent. solution of carbolic acid or a 25 per cent. solution of chromic acid—have been recommended. In small formations vaccinating the nævus is often successful. The galvano-cautery and the actual cautery are both serviceable in treating the smaller nævi. Electrolysis constitutes a valuable plan of treatment. A current of from six to twelve cells is usually required. One or more platinum needles are attached to the negative pole and a single needle or charcoal point to the positive pole. Slight frothing at the points of insertion indicates that the action has been sufficient. Suppuration and sloughing should not occur if proper care is exercised. If the nævus is extensive, only a small portion is to be treated at the one sitting. In the port-wine mark this method promises the best results; the color is made much lighter, and exceptionally is made to disappear entirely. In prominent, and especially in pedunculated, tumors a ligature may be employed.
Lymphangioma.
Lymphangioma (also described as lymphangioma tuberosum multiplex) is a rare disease, characterized by numerous, scattered, pea- or bean-sized, ovalish or rounded, brownish-red, glistening, smooth, slightly-elevated tubercles, having a somewhat translucent look, occurring for the most part about the trunk. They are firm and elastic to the touch; are situated in the cutis, but are not sharply defined; they can be readily made to sink below the level of the surrounding integument, owing to their marked compressibility. At times they have a lilac or bluish tinge. The growths bear some resemblance to the large papular syphiloderm. They are generally congenital or appear in childhood. Anatomically, they consist of immensely dilated and hypertrophied lymphatic vessels. The course of the disease is slow, and evinces no disposition to malignancy. The general health is not involved.
Lupus Erythematosus.