Elements of Surgery

by Robert Liston

Encysted tumours here can seldom be removed by dissection; the depth of their situation, their firm connexion, the awkward situation in which the patient is necessarily placed, and the risk of hemorrhage, forbid the surgeon from attempting regular extirpation. A more simple and equally effectual procedure is as follows:—The membrane of the mouth and the cyst are divided by the point of a bistoury; and if the tumour be large, and the distention great, an oval portion of the parietes may be cut out. The contents are thus evacuated. The bleeding is allowed to cease, and the cavity having been wiped out clean, a stick of caustic potass is applied to the surface, so as to annihilate the cyst effectually. This I believe to be the only radical and safe mode of removal; after any other, the tumour is certain to be reproduced. It has been recommended to pass a seton, so as to excite inflammatory action, and lead to obliteration of the cyst. I have made trial of this practice, but most dangerous swelling ensued, the mouth was rapidly filled, and the system alarmingly shaken; after all the disease was not eradicated.

Tumours beneath the tongue, however originating, occasionally inflame, and become the seat of unhealthy abscess. A large and painful swelling forms, and projects under the chin. The matter gradually approaches the surface, and perhaps evacuates itself imperfectly into the mouth, or the integuments give way, and afford an external issue. In such cases, an early incision from the mouth may prevent the internal mischief, and the disfiguration of the countenance which would otherwise ensue may, in short, limit the suppuration; at a later period a free opening requires to be made below the chin, in the mesial line, and in the direction of the muscular fibres. A ready drain is thus obtained for the matter, and the cavity of the abscess gradually contracts.

Tumours of the Gums are usually hard, and not inclined to increase rapidly. They are of the same consistence as the parts to which they are attached, and grow either inwardly, outwardly, or both. They surround one or more teeth, which at last become loose, the alveolar processes then soften, and form part of the swelling.

These may degenerate, and grow rapidly, or the tumour may be soft (tumor mali moris) from the first. The attention of the patient is directed to the part by the occurrence of discharge from about the teeth, which loosen one after another. A soft tumour arises from the sockets after either extrusion or extraction of the teeth, it grows rapidly, and involves more and more of the gums and alveolar processes. Angry ulceration attacks the prominent parts of the swelling; the bone is softened to a considerable extent around; the discharge is thin, bloody, and profuse. Ultimately the lymphatics become affected, neighbouring parts are contaminated, malignant action acquires a firm footing, and extends, the patient becomes hectic, and dies.

Each kind of tumour should be removed freely and early; the untoward results of the latter have been already mentioned; and I believe that, if the former be allowed to proceed unchecked, the tumour may ultimately extend to the bone, and osteosarcoma of the jaw, more or less extensive, be established. The disease must be attacked at an early period of its existence, and teeth, sockets, and soft parts taken freely away, by means of a strong knife and saw, or cutting forceps. After excision, the actual or potential cautery should be applied, otherwise the disease is apt to recur. Portions of involved bone, which may have escaped the knife, are by the caustic made to exfoliate. When the potassa fusa is used for the purpose of destroying what cannot be readily reached by the knife, and when it is pushed into the alveoli and applied to the altered gum, its action must be limited by the immediate use of vinegar, diluted or not.

Inflammation of the gums and neighbouring parts is attended with violent pain, swelling, and throbbing, difficulty in opening the mouth, headache, and fever. Inflammation of the soft parts runs its course speedily, and, as the cause is seldom removed during the existence of the inflammatory action, generally terminates in suppuration, so giving rise to what is termed parulis or gumboil. Frequently the inflammation extends to the sockets of the teeth, which seldom resist the action long, but from their low degree of vitality soon become necrosed; and by the presence of the dead portions of bone, a fresh accession is given to the disease. Severe pain is experienced on touching the teeth whose alveoli are affected; they project and become loose; purulent matter is secreted, and oozes out between the loosened teeth and diseased gums. Abscesses form, and point in different situations; the gums are tumid and spongy; through the openings in them the bone can be felt bare, and the purulent matter is situated within or around the alveoli, and under the mucous membrane and cellular tissue which invest them.

When the inflammation has been either intense from the first, or of long duration, it not unfrequently happens that abscesses form within the substance of the jawbone, and occasionally to a considerable extent—a portion of the bone having become inflamed, and the action terminating in suppuration and partial caries. This is more apt to occur in the inferior than in the superior maxillary bone; and, if allowed to proceed, the osseous cyst containing the purulent matter gradually enlarges, the plates of the bone are separated and expanded, the parietes become attenuated, and the affection is termed spina ventosa. Purulent collections in this situation also seem, in many instances, to arise from, or at least to be preceded by, the formation of a cyst around the decayed root of a tooth. Such cysts are generally of small size, and pyriform shape; externally they are

smooth, membranous, and of rather a delicate texture; internally, they are lined by lymph of soft consistence, and contain purulent matter. In fact, they are purulent depôts, which form in consequence of inflammation around the fangs of the teeth, and from which the matter is occasionally discharged through a small aperture at the upper part of the cyst, and by the side of the affected tooth. They sometimes attain a very considerable size.

Mercury is perhaps the most common cause of this disease; but it is also produced by certain operations on the teeth, and by the presence of carious teeth or of stumps.