Carcinomas are cancers that arise in the epithelium (the layer of cells covering the body's surface and lining the internal organs and various glands). Ninety percent of human cancers fall into this category. Carcinomas can be.
More than likely, you mean "adenocarcinoma," which is a form of cancer where the cancerous cells form gland-like structures. This is a very common form of cancer in many parts of the body, including...