A system of practical medicine. By American authors. Vol. 2

by Unknown

Certain constitutional diseases appear to involve special liability to this affection, such as scrofula, phthisis, gout, rheumatism, syphilis, and many chronic forms of skin disease; and in many cases the cause is not apparent.

ANATOMICAL CHARACTERS.—The gross appearance of the stomach in chronic gastritis is thus admirably described by Broussais, who faithfully recorded what he "observed during many years in the bodies of those who have long suffered from distaste for food, nausea, and vomiting." These observations were made long before morbid anatomy had thrown much light on the more minute structural changes of organs, and the general picture will be recognized as faithful to-day: "Softening, friability, and the reduction into a kind of gelatinous mass commonly occurs in the region of the lower part of the larger curvature of the stomach; and when closely examined it is perceived that it is not only the mucous membrane that has undergone that species of decomposition, but that the muscular has participated in it, and that the whole of the cellular tissue which united the three membranes has entirely disappeared. The parietes of the viscus are then reduced to a very thin lamina of serous membrane, commonly so fragile as to tear on the slightest handling, or even already perforated without any effort on the part of the anatomist. The pyloric region, on the contrary, has manifestly acquired more consistence and thickness; the mucous membrane there presents large folds, the muscular appears more developed, and the cellular and vascular are injected; sometimes even a true scirrhous state is observed there. The portion of the mucous membrane which covers this scirrhus is sometimes ulcerated, but that in the surrounding parts and at the border of the ulcer, far from being softened, is, on the contrary, tumefied, indurated, and injected. Finally, though there may or may not be ulceration of the pylorus, it is always manifestly hypertrophied, whilst the lower part of the great curvature is the seat of softening and atrophy."

These were the observations of the great anatomist apparent to the naked eye. At the present time we can only confirm them by stating that structural changes are particularly noticed in the pyloric region of the stomach. The mucous membrane generally is vascular and covered with a grayish, tough, transparent mucus. It is more opaque and thicker than natural. The surface is usually changed in color: it may be red, brown, ash-gray, slate-colored, or even black in spots. The darkened spots are due to pigmented matter, and this is generally most marked in the pyloric half of the stomach. It is most commonly met with in cases of prolonged passive congestion of the stomach from portal obstruction, and requires for its production the rupture of capillaries in the superficial layers of the membrane and the transformation of the hæmatin into pigment. The same condition often produces ecchymoses and hemorrhagic erosions in spots. In other cases the mucous membrane is strikingly uneven, being studded with numerous little prominences separated from each other by shallow depressions or furrows. This condition, which has been compared to granulations upon wounds, is called mammillation. It is the état mamelonne of Louis, and is considered by him as a sure and constant sign of inflammatory action. Like many other structural changes, it is usually found in the neighborhood of the pylorus. More rarely polypoid growths project from the membrane, and little cysts also frequently appear in the mucous membrane.

Chronic inflammation tends to thickening of the mucous membrane. It sometimes is not only greatly thickened, but acquires an extreme degree of toughness. Exceptionally, however, the membrane, either entire or in spots, may be abnormally thin. The thickening of the walls of the stomach, when it involves the pylorus, gives rise to constriction of the orifice and consequent dilatation of the stomach.

When the disease has been of long standing the interstitial tissue between the tubules becomes thickened, the stomach is changed in its normal structure, and the tubules themselves become confused, compressed, and much less straight and parallel than in the normal state. Or they may in some cases be enlarged, according to Flint, in consequence of swelling and parenchymatous or fatty degeneration of their epithelial cells. Microscopic examination often shows changes such as occur in other glandular organs. The glands and tubules become the seat of degenerative changes, such as are observed in Bright's disease of the kidney, and they are frequently found associated in the same case. The mouths of the gastric tubules become blocked up, while deeper parts are dilated into cysts; and at times they are atrophied or filled with granular fatty matter.

Many cases of persistent anæmia may be traced, according to Flint, to this degenerative process of the gastric tubules.

The SYMPTOMS of chronic gastritis are mainly those of difficult digestion of an aggravated kind, and are liable to be mistaken for those of ordinary functional dyspepsia. Some points of distinction were referred to in the section treating of functional dyspepsia; and while there are many symptoms in common, it is vastly important that the two forms of the disease should be early recognized, for they are radically distinct in their pathology and treatment.

We now speak of what is usually known as inflammatory, irritative, or gastric dyspepsia—a persistent and aggravated form of indigestion which has its origin in the stomach itself, in contradistinction to dyspepsia which originates largely from causes outside of the stomach and transmitted to it through nervous impression. The one is functional and indirect; the other is inflammatory and direct.

The symptoms referable directly to the stomach are mainly those of difficult and painful digestion, and are alike characteristic of all forms of indigestion, such as loss of appetite, sense of weight and fulness of the epigastrium, distress after taking food, acidity, eructations of gas, etc. But chronic gastritis is more frequently accompanied by a burning sensation in the epigastric region, accompanied by tenderness on pressure, which is generally increased after meals. Sometimes this tenderness amounts to actual pain, which is increased after meals. But we are liable to be misled by pain: gastric pain is not a characteristic symptom; subacute forms of the disease may exist without any fixed pain; the sensation is rather that of burning, uneasiness, and oppression of the epigastric region. The appetite, as a rule, is greatly impaired—indeed, the sense of hunger is rarely experienced—and nausea and vomiting frequently follow the ingestion of food. This is especially the case when catarrh of the stomach is associated with renal disease, portal congestion, or chronic alcoholism. Large quantities of mucus are brought up, the vomiting taking place usually in the morning, and on examination of the mucus it will frequently be found to contain sarcinæ and large numbers of bacterial organisms. When stricture of the pylorus is present the vomiting of putrid, half-digested food usually takes place about the termination of the digestive process.

The tongue presents characteristics peculiar to chronic inflammation of the stomach. In some cases it is small and red, with enlarged and red papillæ; in others, it is broad and flabby and somewhat pale; but in either case, on close inspection, the papillæ will be found red and enlarged, this being more apparent on the tip and edges. In children of scrofulous habits and in older persons of tubercular tendency the whole organ is redder than natural, the papillæ standing out as vivid red spots.