Squamous carcinoma refers to tumors occurring in squamous epithelium-covered areas, and adenocarcinoma refers to tumors occurring in glandular epithelium, both of which are malignant tumors of epithelial tissue. 1. Squamous carcinoma: usually refers to malignant tumors occurring in squamous epithelium-covered areas, such as skin, oral cavity, lips, esophagus, larynx, cervix, vagina and so on. It is mostly cauliflower-like in appearance and may form ulcers. Microscopically, well-differentiated squamous cell carcinoma can be seen, and stratified keratinized material, i.e. keratinized beads, can be seen in the center of the cancer nests, and intercellular bridges can be seen between cells. 2. Adenocarcinoma: usually refers to malignant tumors occurring in the glandular epithelium, such as the gastrointestinal tract, lung, breast, female reproductive system. Cancer cells form glands or adenoid structures of different sizes, shapes and arrangements, and the cells are often arranged irregularly in multiple layers, with nuclei of different sizes and often divided. If you have squamous carcinoma or adenocarcinoma, it is recommended to go to a regular hospital to avoid delaying your condition.