Elements of Surgery. Robert Liston

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Название Elements of Surgery
Автор произведения Robert Liston
Жанр Языкознание
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isbn 4057664574671



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When once established, it proceeds with all its virulency. The diseased parts may be removed as frequently as they appear; but they will be reproduced, and the disease will assume a still more frightful aspect, both in extent and malignity.

      In consequence of the repeated and profuse loss of blood, the patient is gradually worn out, becomes hectic, is affected with nausea, vomiting, and indistinct articulation, with all the symptoms of extreme debility, and he generally sinks exhausted, or may be suddenly carried off by profuse hemorrhage.

      

      The size of the bleeding fungus is extremely various, but it is rarely large; in fact, we frequently find that the most violent hemorrhage occurs from those of a small size; and in illustration of this, I shall briefly relate the following case. A man, aged forty, had been afflicted for some time with ulceration in the ham, and exfoliation of the posterior part of the femur. The sore healed; but about two years afterwards the cicatrix became ulcerated, and produced a very small fungus, resembling, in fact, a minute cluster of exuberant granulations: from this blood was effused in small quantity, and was easily restrained by the application of a bandage; but the hemorrhage returned at various intervals for upwards of a week, became extremely profuse and altogether uncontrollable. By this the patient was greatly exhausted, and amputation was rendered absolutely necessary. On examining the limb, the lower portion of the femur was found somewhat enlarged, its internal structure completely destroyed, and the periosteum on the inner side much thickened. On the posterior and inner part of the bone, about three inches above its articulation, there was a small fungous tumour of an irregular surface, and of soft consistence, resembling congealed tallow. From this excrescence the blood had been effused into a cyst formed amongst the muscles, and afterwards discharged externally. He recovered from the amputation, and remained well.

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      Though of small size, and not possessed of malignant action or disposition, is a tumour of very great interest, on account of the excruciating pain with which it is accompanied. It is mostly situated in the subcutaneous cellular tissue, but not unfrequently in the intermuscular cellular substance; one tumour of this species which I have removed was so deep as to be in immediate contact with the sheath of the posterior tibial nerve. The tumour, generally of the size of a garden pea, rarely exceeds that of a cherry. It is invested by a dense ligamentous cyst, to which it intimately adheres; but occasionally the capsule is thin and cellular: in many instances its surface is perfectly smooth, in others it is slightly nodulated. It is not connected with any large nervous trunk; but minute nervous fibrillæ can occasionally be traced expanding on its surface, and apparently entering its substance. Internally it is composed of numerous whitish fibres, of considerable density, ramifying irregularly throughout its structure; and betwixt these is insinuated a firm substance, generally of a grey colour, and frequently of an almost cartilaginous consistence. Such is the structure most frequently observed; but in this morbid formation, as in all others, the appearances may be said to vary in almost every instance. Sometimes the fibres are indistinct, and of a yellowish or dirty grey colour; and the interfibrous matter is often found to vary in density and colour in different tumours, being at one time dense and almost transparent, at another opaque and cartilaginous, and sometimes rather soft, brownish, and occasionally tinged with blood. From attentive examination, it appears extremely probable that the enlargement is at first produced by infiltration of lymph betwixt the fibrillæ of a nervous twig, which becomes separated and inclosed by the deposit—that they afterwards increase in size—that the interfibrous matter is deposited in greater quantity, and is farther condensed—and that thereby the nervous filaments are still more separated and extenuated. In short, it would appear that the fibrous matter is nervous, though altered, and that the interposed substance is organised and condensed lymph. The tumour, at first extremely minute, enlarges slowly; when deep, it can only be obscurely felt, and its existence is with difficulty discovered by manipulation; but the attending symptoms are so peculiar, and so forcibly developed, as to lead the surgeon at once to an accurate diagnosis. When it is subcutaneous, the skin is rendered slightly prominent, and the size, density, and loose connections of the growth, are readily ascertained. The slightest pressure causes the most excruciating torments, and totally unmans the patient, even though induced by the most trifling movement of the adjoining muscles. From a fearful and well-grounded knowledge of this circumstance, the patient is extremely anxious to preserve the limb in a state of complete rest, and, in fact, he is often wholly unable to use it; although the part is completely set at rest, still he frequently suffers from paroxysms of severe pain, commencing in the tumour and shooting through the limb. The painful sensations are sometimes very much alleviated by gentle friction with the hand. The disease is most frequent in the extremities, and in the inferior more than in the superior.

      The larger nervous trunks sometimes become diseased, being affected with an enlargement resembling the structure and appearance of the preceding tumour, and such enlargements are termed Neuromata. Occasionally a portion of a nervous trunk is thus enlarged, from a blow or wound; and sometimes there can be no cause assigned. Nerves when divided, become bulbous on that extremity towards their centre. In stumps this is well seen; whilst all the tissues entering into it, after a time shrink, and become more or less atrophied (bone, muscles, vessels, &c.), the extremities of the nerves swell out and present a bulbous appearance. When these tumours are connected to, and only covered by, integument, or when they are adherent to the ligamentous substance covering the bone, and become exposed to pressure, as in badly made stumps, the patient often suffers excruciating agony. The nervous trunk above is, in general, slightly enlarged, sometimes has a tortuous course; and in some instances the neurilemmal bloodvessels are considerably increased in size. The same symptoms exist, though in a less acute form, as in the painful tubercle.

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      A common species of tumour is that which is attached to a mucous surface, and is called POLYPUS. Polypi vary in structure and disposition; some are simple and benign, others are most malignant. The simple mucous polypus has a shining appearance, being invested by an extremely delicate membrane, in some degree resembling the mucous, and moistened by a fluid similar to the mucous secretion; it is of soft consistence and homogeneous structure. They are generally light brown, sometimes greyish, and in some degree diaphanous. They are connected to the mucous membrane by a narrow pedicle; generally occur in clusters, and are of pyriform shape; one or more are often suspended from one narrow base, and they seldom attain a large size. They possess but little vascularity, though occasionally minute vessels are seen ramifying pretty freely on their surface, and may be considered as almost devoid of sensibility. The malignant polypus, on the contrary, is always attached to the mucous membrane, and also to the subjacent parts, by means of a broad base; and its form and structure vary according to the particular action which it has assumed. Most frequently it is encephaloid, of an irregular form, and often presenting a cauliflower appearance, its surface being studded with numerous excrescences of medullary consistence and colour. Such tumours will be afterwards treated of, as occurring in different situations.

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      Along with these have been classed the enlargements of bursæ, sheaths of tendons, &c., but with equal propriety might we include hydrocele and other collections in natural cavities. Encysted tumours are almost always situated superficially. The skin is distended, seldom inflamed, and often contains enlarged bloodvessels, which give it a streaked appearance. They consist of an external cyst, which is in some instances extremely thin and delicate, in others dense, of considerable thickness, and composed of fibrous looking substance, occasionally it is almost cartilaginous; the internal structure may be said to be almost always more or less fluid, but varies much in consistence. The tumour is surrounded with condensed cellular substance,