A human body organ must not have cancer

We know that most tissues and organs in the human body can get cancer, except the heart. Why?

First, it is related to the structure of the heart.

Cancer arises from the metaplasia of epithelial tissue. Wherever there is epithelial tissue, there is the potential for cancer to occur. Epithelial tissue covers the surface of the human body, as well as the inner surfaces of the digestive tract, respiratory tract, urinary tract, and reproductive tract. It is also the essential component of organs such as the liver, kidneys, breasts, and prostate. These tissues and organs may develop cancer. Cancer is a malignant tumor that occurs in epithelial tissue. Since there is no epithelial tissue in the heart, there will naturally be no primary cancer.

Secondly, it is related to the unique anatomical position of the heart.

The heart and blood vessels form a closed blood circulation system, making it less vulnerable to direct invasion by harmful substances from the outside world. Many carcinogens that people face in their lives may cause varying degrees of damage to organs such as the nasopharynx, oral cavity, esophagus, gastrointestinal tract, lungs, and skin, and thus induce malignant lesions. Compared with these organs that are exposed to harmful substances every day, the heart, hidden deep in the core of the body, is less susceptible to direct damage from these carcinogens. Even harmful substances that enter the bloodstream are constantly purified as they pass through the liver, spleen, and kidneys. In this way, some harmful substances in the blood will hardly have adverse effects on the heart.

Again, it’s about the function of the heart

Throughout a person's life, the heart beats constantly, day and night, never stopping. The heart is the pumping station for the body's blood circulation. Because the blood flowing through the heart never stops, even metastatic malignant tumor cells should not stay in the heart. In fact, most metastatic tumors in the heart are local invasions from primary or secondary malignant tumors in the lungs or mediastinum.

However, it does not mean that there is absolutely no tumor in the heart.

It has been reported that the incidence of cardiovascular sarcoma and malignant lymphoma in AIDS patients is increased, and the latter can even be the direct cause of death of the patient. The heart itself also has conscientious tumors, such as cardiac cavitary myxoma, as well as sarcomas and metastatic tumors from striated muscles. It's just that the cancer does not arise from epithelial metaplasia.