Although cancer is not a contagious disease in humans or...

Question

Although cancer is not a contagious disease in humans or other vertebrates, there have been rare cases in which cancers have spread from one organism to another. Describe three cases of these contagious cancers and what conditions might have led to their appearance. For an introduction to this topic, see http://www.cancer.org/cancer/cancerbasics/is-cancer-contagious.

Accepted Answer

Hi everybody. Let's take a look at this practice problem together Which type of cancer is most commonly associated with H. I. V. Infection. Remember that HIV infection is human immunodeficiency virus and it attacks the body's immune system, making it vulnerable to infections and diseases and therefore can be associated with cancer. Let's look at our options. We're going to look at B. Retinoblastoma. Now think retinal and retina is the I. So this is a eye cancer. Now retinoblastoma czar caused by genetic mutations and not associated with HIV infection. So B is incorrect. Now let's take a look at sea feo como se toma. This type of cancer develops in the adrenal glands and the adrenal glands secrete hormones. So a field chromosome toma is a tumor that releases hormones and it's not directly related to HIV infection. And so C. Is also incorrect. Then D. Panko syndrome tumor. Now this tumor is rare and it is found in the upper lungs. It is caused by factors like harmful chemical exposure and or tobacco use. It's not associated with HIV infection. So it's also an incorrect answer. So the correct answer is a posI sarcoma. Now, Kaposi's sarcoma is a type of cancer found in skin mucous membranes and soft tissues. It's a cancer caused by human herpes virus eight and in healthy people. This herpes virus is not a problem. However, in those infected with HIV who have a weakened immune system, they're often at risk for getting Kaposi's sarcoma due to the inability to fight off the infection. So a posi sarcoma is our answer. All right, everyone I hope you found this helpful, and I'll see you soon for the next practice problem.

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