[Helicobacter pylori and stomach cancer].

The neoplasms and gastric mucosa colonization with Helicobacter pylori was studied in 40 stomachs resected for expansive (n = 20) and infiltrative (n = 20) carcinoma using Giemsa staining histological sections, histochemical reactions to oxyreductase, and urease test. In expansive carcinoma of the stomach, H. pylori was identifiable both in the tumour and surrounding gastric mucosa in 70 per cent of cases; infiltrative carcinoma appeared to be associated with gastric mucosa H.

[Morphologic data on the immune reaction of malignant tumors of the stomach].

The authors present a morphological investigation of the status of local immunoreactivity in gastric cancer. It was established that the character and degree of severity of the local immune response in cancerous neoplasms of the stomach depends on the histological structure of the tumour and stage of the pathological process and does not depend on the age of the patient.

[Adenosquamous early gastric carcinoma].

A case of early gastric carcinoma with areas of the adenosquamous differentiation is described. The origin of the squamous epithelium in gastric carcinoma is discussed.

[Intestinal metaplasia and stomach cancer].

Foci of intestinal metaplasia of gastric mucosa are known to be heterogeneous both morphologically and functionally, and several types of such metaplasia are now recognized. However, different authors use different criteria for their identification and, moreover, evaluate the signs of metaplasia in different ways. Also, the relationship of different types of intestinal metaplasia to one another and to dysplastic changes in the epithelium and to gastric cancer is a matter of controversy.

[Chronic gastritis and cancer of the stomach].

The paper analyses interrelationships between chronic gastritis and carcinoma of the stomach. It has been recognized that various forms of chronic gastritis preceed carcinoma of the stomach. The source of the carcinoma origin is the epithelium of the gastric pit, intestinal and mixed epithelium.

[Chronic hypertrophic glandular gastritis and stomach cancer].

Histotopographic, morphological, and histochemical investigations of the state of the gastral system in 147 cases with gastric cancer of Ist--IVth state, occurrence of which could not be associated with chronic ulcer or polyp, justified the conclusion that in 9 cases (6.2%) extensive erosive, ulcerous-infiltrative and diffuse cancer developed against the background of preceeding hypertrophic glandular gastritis. Moreover, there was a likelihood that in 7 cases (4.