[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.