Histology divides the main polyps into the gastrointestinal tract into simple and proliferating ones. Simple are glands separated by connective tissue layers. These glands are formed from prismatic cells of light color, which produce mucous secretions. When the regression stage comes, they replace their glandular structures with fibrous tissue. The proliferating polyp is, in principle, the same, but with a slight difference. The difference is that the glands are not light, but dark and besides do not produce mucus.
Adenomatous proliferating polyps are very often transformed into a malignant tumor.
The adenomatous polyp is divided into 3 groups: malignant, proliferating and simple. They are slightly different from other types. The sites of proliferation sometimes shift either to the top of the formation itself, or to its depth. With all this, it should be noted that one way or another, but these areas are always on the top of the tumor.
Cells of the regenerative zones of the iron necks have proliferating epithelial cells, which in their turn do not differ in any way from those located on the edge of the chronic ulcer.
Such cells are not capable of secreting mucus, they are highly prismatic, occupy a basal position, with a basophilic cytoplasm and a long dark nucleus. After a while, this epithelium displaces all other elements of the cells. After a certain time, one can observe how the entire polyp or only the upper part has undergone proliferation. Signs are dark glands, usually covering the upper half of the polyp, leaving the base of the usual light color.
Proliferating polyp in the rectum
In principle, everything is very similar to the structure of similar neoplasms in the stomach. Such formations are considered epithets. The share of the rectum of such epithelial tumors accounts for 8.5%, the remaining percentage is for malignant polyps. From this it follows that adenomatous in the rectum occur very often and make up 90% of all other epithelial formations.
The adenomatous tumor has a double structure: the upper part is the proliferating epithelium, and the lower part is the usual light epithelium, which forms mucous secretions. Proliferating cells of the colon are quite similar to the same cells that are in the stomach. Dark, slightly elongated nuclei occupy the basal level of the cell.