Carcinoma is a kind of cancer which begins from the skin cells or the tissues lining the kidneys, liver, or and other internal organs. This is the most common type of cancer which has various subtypes such as the following:
• Basal Cell Carcinoma - The cancer cells develop at the lowest layer of the skin, or the basal cell layer of the epidermis. Basal cancerous cells rarely spread to the other body parts since they develop slowly.
• Squamous Cell Carcinoma - The cancer cells develop from the outermost layer of the skin where the squamous cells are. Like basal cancerous cells, they grow slowly and less likely to metastasize but they are more likely to spread to the fatty tissue under the epidermis.
• Ductal Carcinoma In Situ - The cancer cells develop in the breast. They have not spread into the neighboring tissue as they are confined in the milk ducts’ linings.
• Renal Cell Carcinoma - The cancer cells develop from the kidneys’ small tubes.