[Adenogenous cancer of the esophagus].

Bioptates and resected material from patients treated for cancer of the esophagus at the Kazakh Research Institute of Oncology in 1980-1989 were analysed. Adenogenic tumors made up 6.0% of the 1671 cases of esophageal cancer studied.

[Polycystosis of the esophagus].

A rare observation in a male patient of 72 suffering from pulmonary tuberculosis. Severe chronic oesophagitis complicated with polycystosis was found at the autopsy. Multiple retention cysts up to 0.

[Electron microscopic verification of adenocarcinoma of the cardioesophageal area].

Normal gastric and esophageal cardiac glands as well as proper esophageal glands were studied electron-microscopically. Cardiac gastric and esophageal glands were found to differ by chief cells available in the gastric glands and greater amounts of endocrine cells registered in the esophageal glands. The evidence can provide grounds for electron microscopic verification of cardioesophageal adenocarcinoma permitting the pathologist to rest upon the presence of cells resembling those of proper gastric glands and epigastric fossa.

[Electron microscopic study of the histogenesis of dimorphous adenosquamous cell cancer of the esophagus].

The report discusses a comparison of the results of electron microscopic study of glandular-squamous cell carcinoma of the esophagus, normal mucous gland tissues of the same organ and those in reserve cell proliferation. Glandular-squamous cell cancer tissues were found to contain tumor squamous-epithelial cells, glandular cells with secretory grains inherent in the mucous glands proper of the esophagus as well as chimera cells revealing the ultrastructural characteristics of the two cellular type. Further support was obtained for the previously suggested view on the bipotent epithelium of ducts of the mucous glands proper as a source of glandular-squamous cell carcinoma of the esophagus.

[Morphological variants of glandulo-squamous cell cancer of the esophagus].

Microscopical examination of glandular-squamous cell carcinoma of the esophagus (20 cases) showed the variability of its structure. The following morphological varieties of the glandular tumour component are established: tubular, papillary, cystic, mixed. The degree of the tumour component differentiation can vary and this should be reflected in the histological diagnosis.