. Elements of pathological anatomy. Anatomy. CHAP. VI.] HYPERTROPHY DILATATION. 295 lining membrane of the cephalic, median basilic, and radial veins, was studded with them, the other coats being at the same time much inflamed, thickened, and indurated. The characters of chronic inflammation of the veins dif- fer considerably from the acute. The coats are usually much thickened, hypertrophied, and so dense that the vessel, when cut across, preserves its cylindrical figure, like an artery. The redness is of a brownish tint, interspersed with numerous shades of gray, violet, or purple ; and the
. Elements of pathological anatomy. Anatomy. CHAP. VI.] HYPERTROPHY DILATATION. 295 lining membrane of the cephalic, median basilic, and radial veins, was studded with them, the other coats being at the same time much inflamed, thickened, and indurated. The characters of chronic inflammation of the veins dif- fer considerably from the acute. The coats are usually much thickened, hypertrophied, and so dense that the vessel, when cut across, preserves its cylindrical figure, like an artery. The redness is of a brownish tint, interspersed with numerous shades of gray, violet, or purple ; and the inner membrane, which is rough and shriveled, can be easily raised in large opaque shreds. In some instances, the vein is dilated, or con- tracted, obstructed with clotted blood, lined by coagulating lymph, or filled with pus. There are certain states of the system in which the veins seem to attain a very great size, carrying an inordinate amount of blood. This hypertrophy, for so it may be termed, is very conspicuous in chronic affections of the joints, in vascular and malignant tumors, and in the veins of the uterus during the latter months of pregnancy. It is always conjoined with hy- pertrophy of the arteries, and forms one of the most serious obstacles to the cure of various diseases. Dilatation (Fig. 24) is most frequently observed in the veins of the testicles and lower extremities, in persons whose employments compel them to Fi 24 stand for a long time in one position. It has also been observed in the superior ex- tremities, and, in a few in- stances, I have witnessed it in the superficial veins of the abdomen. Of the deep-seated veins, those frequently affect- ed are the subclavian, jugu- lar, azygos, and hemorrhoidal. The vessels, in this disease, become larger, elongated, knotty, irregular, and tortu- ous, winding in a serpentine manner underneath the skin. Their coats are either of the natural structure, or they are thick and rigid, or thin and expanded, or, finally
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Keywords: ., bookauthorgr, bookcentury1800, bookdecade1840, booksubjectanatomy
