Cancer (this article is in Russian — Рак) is a malignant tumor of epithelial cells of the skin, mucous membranes of the stomach, intestines, respiratory tract, various glands, etc. In connection with the morphological features distinguish the various forms of cancer: squamous cell carcinoma (develops primarily on the skin and mucous membranes covered with squamous epithelium), adenocarcinoma, Scherr and others.
Cancer (Latin cancer, carcinoma, from the Greek karkinos — cancer, crab) — a malignant tumor from the epithelium, that is, from the tissue that covers the animal organism from the outside and lining it from the inside, as well as its forming glands. Therefore, cancer is a malignant tumor (tumor, blastoma) of the skin, digestive tract, respiratory and urinary tract, lungs, kidneys, liver, genitals and glands. The name given by the doctors of the middle ages, is associated with the appearance of a tumor resembling cancer or crab. Cancer accounts for the vast majority of all malignant human tumors, including many sarcomas, hematological malignancies, glial tissue, bone, and other tumors. In some countries, cancer is understood as any cancer.– Далее –