In adults, over 90% of all cancers arise in epithelium. Such cancers are called carcinomas, or adenomas (adenocarcinomas) if they arise in glandular epithelia. In fact, cancers of the skin, lung, colon, breast, and prostate are all in these categories. Why do you think this is so?

Video transcript

Hi, everybody. Let's look at the next question. Which of the following tissues is the most common site of cancer occurrence. A epithelial tissue b, connective tissue c muscle tissue or d nervous tissue. And the answer here is choice. A epithelial tissue. And this makes sense because this tissue lines all body cavities. So it's found in abundance throughout the body. It's found obviously in the skin lining the organs and surrounding them and the interior passage weighs like the gastrointestinal tract. So interior tracts in the body. So there's just so much epithelial tissue all over the body that it is most common for cancer to occur in this type of tissue. So that is our answer choice. A epithelial tissue. See you in the next video.