The complication most frequent is pneumonia, and the next entero-colitis. Gangrene of the lungs, of the palate, pharynx, or oesophagus, of the anus, and of the vulva, may supervene. Hemorrhage from the facial artery or its branches has been noted as an exceptional mode of death (Hueber), the rule being that the arteries in the gangrenous area become plugged by thrombi, and thus prevent hemorrhage.
Recovery may take place before the local disease has penetrated the cheek—indeed, while the mucous membrane alone is involved. In recent instances, however, the disease does not subside until after the loss of considerable portions of the cheek, and the child recovers with great deformity, not only from loss of tissue in the cheek and nose, but from adhesions between the jaws and the cheek.
PATHOLOGY AND MORBID ANATOMY.—Gangrenous stomatitis always involves the cheek, almost always that portion in proximity to the mouth. It is almost invariably unilateral. Either side seems to be equally liable. Both sides suffer only, it is contended, when the gangrene is limited in extent, confined to the mucous membrane, and occupies the sides of the frenums of the lips (Barthez et Rilliet). It usually if not invariably begins in the mucous membrane, as a phlyctenular inflammation, which undergoes ulceration, followed by gangrene, immediately or not for several days, and then becomes covered with a more or less brownish-gray eschar. The ulceration of the mucous membrane is occasionally preceded by an oedematous condition of the cheek externally, similar to that sometimes observed in ordinary ulcerous stomatitis; but this is not the characteristic circumscribed, tense infiltration observed later. This ulceration is situated most frequently opposite the junction of the upper and lower teeth. Sometimes it proceeds from the gingivo-buccal sulcus of the lower jaw, sometimes from the alveolar border of the gums. It extends in all directions, and often reaches the lower lip. From three to sixteen days may be consumed in these extensions. The surrounding mucous membrane becomes oedematous. The ulceration soon becomes followed by gangrene, sometimes within twenty-four hours, sometimes not for two or three days, and exceptionally not for several days. The ulcerated surfaces bleed readily, change from gray to black, and become covered with a semi-liquid or liquid putrescent detritus. They are sometimes surrounded by a projecting livid areola, which soon becomes gangrenous in its turn. The shreds of mortified membrane, though clinging a while to the sound tissues, are easily detached, and often drop spontaneously into the mouth. Meanwhile, there is abundant salivation, the products of which pour from the mouth, at first sanguinolent, and subsequently dark and putrescent and mixed with detritus of the tissues. Large portions of the gums, and even of the mucous membrane of the palate, may undergo destruction within a few (three to six) days. The gangrenous destruction of the gums soon exposes the teeth, which become loose and are sometimes spontaneously detached. Thence the periosteum and bone become implicated and undergo partial denudation and necrosis, and portions of necrosed bone become detached if the patient survives. The characteristic implication of the exterior of the cheek becomes manifest from the first to the third day, but occasionally not until a day or two later. A hard, circumscribed swelling of the cheek or cheek and lip occurs, sometimes preceded, as already intimated, by general oedematous infiltration. The surface is tense and unctuous, often discolored. In its central portion is an especially hard nucleus, one to two centimeters or more in diameter. Gangrene often takes place at this point from within outward at a period varying from the third to the seventh day or later. The skin becomes livid, then black; a pustule is formed at the summit of the swelling, which bursts and discloses a blackened gangrenous eschar from less than a line in thickness to the entire thickness of the cheek beneath. The area of gangrene gradually extends. The dead tissues become detached, and a perforation is left right through the cheek, through which are discharged saliva and detritus. Meanwhile, the submaxillary glands become swollen and the surrounding connective tissue becomes oedematous. In some instances, however, no change is noticeable in these glands.
Examinations after death have shown that thrombosis exists for some distance around the gangrenous mass. Hence the rarity of hemorrhage during the detachment of the eschar.
DIAGNOSIS.—In the early stage of the disease the main point of differential diagnosis rests in the locality of the primitive lesion, the mucous membrane of the inside of one cheek. Subsequently there is the gangrenous odor from the mouth; the rapid peripheric extension of the local lesion, which acquires a peculiar grayish-black color; its rapid extension toward the exterior of the cheek or lip; the tumefaction of the cheek, discolored, greasy, hard, surrounded by oedematous infiltration, and presenting a central nodule of especial hardness; then the profuse salivation, soon sanguinolent, subsequently purulent and mingled with detritus of the mortified tissues. Finally, the eschar on the exterior of the swollen cheek or lip leaves no doubt as to the character of the lesion. From malignant pustule it is distinguished by not beginning on the exterior, as that lesion always does (Baron).
PROGNOSIS.—The prognosis is bad unless the lesion be quite limited and complications absent. At least three-fourths of those attacked perish; according to some authorities fully five-sixths die. The objective symptoms of the local disease are much more important in estimating the prognosis than are the constitutional manifestations, the vigor of the patient, and the hygienic surroundings, although, as a matter of course, the better these latter the more favorable the prognosis. Prognosis would be more favorable in private practice than in hospital or asylum service.
TREATMENT.—Active treatment is required, both locally and constitutionally. Local treatment is of paramount importance, and alone capable of arresting the extension of the process of mortification. The topical measure in greatest repute is energetic cauterization with the most powerful agents, chemical and mechanical—hydrochloric acid, nitric acid, acid solution of mercuric nitrate, and the actual cautery, whether hot iron, thermo-, or electric cautery. The application of acids is usually made with a firm wad or piece of sponge upon a stick or quill, care being taken to protect the healthy tissues as far as practicable with a spoon or spatula. After the application the mouth is to be thoroughly syringed with water to remove or dilute the superfluous acid. Hydrochloric acid has been preferred by most observers.
As these cauterizations must be energetic to prove effective, anæsthesia ought to be induced. Should ether be employed for this purpose, hydrochloric acid or the acid solution of mercuric nitrate would be selected of course.
In the early stages these agents are to be applied to the inside of the cheek, so as to destroy all the tissue diseased, if practicable, and expose a healthy surface for granulation. Should the exterior of the cheek become implicated before cauterization has been performed or in spite of it, it is customary to destroy the tissues from the exterior, including a zone of apparently healthy surrounding tissue. As the gangrene extends, the cauterization is to be repeated twice daily or even more frequently. After cauterization the parts are dressed with antiseptic lotions, and antiseptic injections or douches are to be used frequently during day and night to wash out the mouth and keep it as clear as possible from detritus.
Meigs and Pepper report beneficial results from the topical use of undiluted carbolic acid, followed by a solution of the same, one part in fifty of water, frequently employed as a mouth-wash. The progress of the sloughing was checked and the putridity of the unseparated dead tissue completely destroyed in the two cases mentioned by them, one of which recovered quickly without perforation of the cheek. Gerhard preferred undiluted tincture of the chloride of iron; Condie, cupric sulphate, thirty grains to the ounce. Bismuth subnitrate has recently been lauded as a topical remedial agent.13