This term comes from the Latin "carcinoma" , which in turn, comes from the Greek "karkinoma" . Carcinoma is a word that is defined in the context of medicine as a malignant tumor originating from the glandular or epithelial structures, and they represent 80% of all cancers. They can be classified into different types of them, adenocarcinomas and epidermoids.
They usually originate in organs such as the lungs, skin, colon, cervix, stomach, breasts, or prostate. Carcinomas represent the most common type of cancer. Generally they spread first by local incursion then by lymphogenic metastases and then by hematogenous metastases, among their characteristics are that they are firm in consistency, their color can vary from yellowish-white to gray, and they present a grainy and opaque surface.
An adenocarcinoma is a carcinoma that originates in the cells that make up the inner lining of the external secretion glands, adenocarcinomas are part of a set of cancers that are generated in a class of cells that are continuously in cell division, representing a greater danger of transformation. Initially they may appear in the form of an adenoma (benign glandular tumor). The most common adenocarcinomas can occur in organs such as the colon, prostate, breasts, lung, endometrium, among others.
The epidermoid carcinomas represent a very common type of cancer that occurs in the skin, and according to studies, appear more in men than in women. Squamous cell carcinoma is also known as cancer skin melanoma and is classified into: Basal Cell Carcinoma Basal or cell and squamous cell or squamous.
The basal cell carcinoma originates in the epidermis (top layer of skin) commonly this type of cancer appear in those skins that are regularly exposed to the sun, usually present in skins of people over 40 years, however, also they can appear in young individuals whose skin is continuously exposed to the sun's rays.
Squamous cell carcinoma also originates in skin that has been exposed for long periods to sunlight, however, it can also appear in other parts of the body such as the oral mucosa or the tongue. Initially, this type of cancer begins to appear as a reddish area with a scaly surface that as it develops, it can become an open ulcer.
