Clinical lectures on the principles and practice of medicine . morrhoidal veins(hcemorrhoids). In all these cases the veins gradually enlarge, and thenbecome distended, tortu-ous, and coiled up. Seve-ral of these, accumulatedtogether, may produceknotty swellings in thelegs, cause the testicle toassume an unusual size, orproduce tumors which,during defsecation, areprotruded beyond themargin of the anus. Suchgrowths may ulcerate, and cause death by hsemor- Fig. 246. rhage, or they may be spontaneously obliterated by the formation of clotswithin them. An artery rarely becomes varicose. The enlarg
Clinical lectures on the principles and practice of medicine . morrhoidal veins(hcemorrhoids). In all these cases the veins gradually enlarge, and thenbecome distended, tortu-ous, and coiled up. Seve-ral of these, accumulatedtogether, may produceknotty swellings in thelegs, cause the testicle toassume an unusual size, orproduce tumors which,during defsecation, areprotruded beyond themargin of the anus. Suchgrowths may ulcerate, and cause death by hsemor- Fig. 246. rhage, or they may be spontaneously obliterated by the formation of clotswithin them. An artery rarely becomes varicose. The enlargement of vascular growths, for the most part, arises throughdilatation of the vessels ; no new materials are produced in them, with theoccasional exception of such as arise in the clot of blood within them,viz., fibrous or albuminous laminae, or calcareous masses. Through thepresence of these, the vessel becomes obliterated, and gradually assumesthe density and appearance of ligament. New vessels constitute one of the most common pathological forma- Fig. 247.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectmedicine, bookyear187
