A rare case of basal cell carcinoma of the stomach

Since the work of Kgomresheg, groups of cancers have been identified under the name Basalzellenkrebs, which originate from the basal cells of the multilayered epithelium of the skin and mucous membranes of various organs. Borrmann avoids this name, considering it incorrect. Considering the epithelium in its embryonic differentiation as a whole, and the process of keratinization in the upper layers as a physiological process of renewal, he does not see the possibility of attributing to the epithelium in its individual layers different biological properties in the sense of the morphology of tumors originating from different layers of the epithelium. The question, in his opinion, can be solved in a positive sense if we accept the statement of Schapert and Cheps about the presence of cell complexes in the entire epidermis that remain at the embryonic stage of development. He divides skin cancers into squamous-epithelial, keratinizing (cancroid) and non-keratinizing or atypically keratinizing squamous-epithelial (parakeratous) cancer. Lauche produces these cancers throughout the intestinal canal from embryonic epithelial sites that remain completely undifferentiated. Histologically, these cancers are constructed from large-spindle cells, poor in plasma, with a nucleus rich in chromatin. In their structure, these cells are similar to the elements of the main layers of the epithelium of the skin and mucosa, rarely undergoing further differentiation in the form of keratinization and mucus formation. Dusshl notes some characteristic features of the structure of this cancer in the stomach: in the outer rows of the tumor, the cells have a cylindrical shape, the inner ones are egg-shaped and fusiform. It is often possible to see round glandular lumen in cancerous areas. Localization of these tumors: the skin of the face, nose, lips, hard palate, laryngeal mucosa, trachea, bladder, esophagus, intestines, appendix. A case of basal cell carcinoma in the stomach is described only by Duschl.