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How does cancer form?

LIBOGENE / 癌症  / How does cancer form?

How does cancer form?

The word “Cancer” familiar to everyone, originated from the Greek word meaning “Crab.” This describes how this formation is firmly entrenched in human tissues and is difficult to remove.

Cancer is actually a type of tumor. Tumors are cells that have mutated. These cells no longer behave normally and have a tendency to continue growing in number. As they grow, they form new tissue mass, commonly called a tumor. Tumors can be benign or malignant, and malignant tumors are what are commonly known as cancers. A benign tumor will only have localized and limited growth and the growth will be slow. Except for a small number of cases, (tumors that grow in important body parts such as the brain) benign tumors are not life-threatening. However, malignant tumors will not only grow rapidly without stopping, but they have a tendency to invade and damage nearby normal tissues during its growth. In addition, these types of malignant tumor cells can pass through blood vessels or lymph nodes and circulate around the body, invading other body parts. This phenomenon is called metastasis.

Under normal conditions, human cells are orderly and organized. They not only coordinate with each other, but also limit each other. Each cell performs their respective duties. However, when cells turn malignant, they break many cellular organization structures and take many derailing actions. These cells break the body’s “contact inhibition” biological law; that is, when cells come in contact with one another, they naturally stop dividing. However, cancer cells grow and divide without inhibition. They steal nutrition that is meant for normal cells and continue to grow and divide. Once these cancer cells have established themselves, they expand again. This continuous spread damages other tissue organs, which is what causes the human body to gradually fail and finally die.

The reason why cancer cell are only discovered after they turn malignant is because they are part of the body, unlike germs and other foreign bodies. These are mutant body cells that do not obey normal order; thus, they are easy to be overlooked.

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