What is Cancer ? and Types Of Cancer

What is Cancer?

What is Cancer?

Cancer is a complication that occurs by the uncontrolled division of cells and their spread into the surrounding tissues. The cause of cancer is a change in DNA. The majority of DNA changes that cause cancer occur within DNA sections known as genes. The changes can also be referred to as genetic changes. Cancer is a condition that occurs when cells multiply uncontrollably and then extend into surrounding tissues.

The Definition of Cancer

The disease of cancer is one that causes a portion of the body’s cells to multiply in an uncontrolled manner and can expand to other areas of the body.

Cancer can develop at any point in the human body composed of millions of cells. Normally, human cells expand and multiply (through the process of cell division) to make new cells when the body requires them. As cells age or are injured, they cease to exist and new cells are created to replace them.

Sometimes this ordered process is broken down and cells that are damaged or abnormal increase in size and number even though they should not. They can develop into tumors which constitute lumps or tissue. The tumors could be cancerous, as well as non-cancerous ( benign). What is Cancer

The cancerous tumors grow into or infiltrate nearby tissues and may also spread to far-off areas of the body, forming new tumors (a procedure known as metastasis). The tumors of cancer can also be referred to as malignant tumors. Many cancers cause solid tumors. However, blood cancers like leukemias are not usually.

They don’t expand into or infiltrate the surrounding tissues.

After removal, benign tumors generally do not grow back, while cancerous tumors may. Sometimes, benign tumors can appear quite large, but. They can also cause severe symptoms or even be life-threatening in the case of benign tumors in the brain. The definition of Cancer

The disease of cancer is one that causes a portion of the body’s cell types to grow uncontrollably and eventually expand to other parts of the body.

They don’t expand to or penetrate, the surrounding tissues. Once removed benign tumors generally don’t recur, while cancerous tumors can. The benign tumors may become quite large, but. Certain types can trigger serious symptoms or be life-threatening for benign tumors, like those within the brain.

The differences between cancer cells and Normal Cells

Cancer cells are different from normal cells in a variety of ways. For example cancer cells

• develop in the absence of signals that tell them to grow. Normal cells will only expand when they are notified.
• do not respond to signals that typically send cells signals to stop division or cease to divide or die (a process referred to as programmed cell death or apoptosis).
• Invade close areas, then extend to other areas within the body. Normal cells cease growing once they meet other cells and the majority of normal cells are not able to move about the body.
• They tell blood vessels to expand towards tumors. The blood vessels provide tumors with nutrients and oxygen and eliminate waste products from tumors.

Cancer Define

• protect themselves away from the defense system. The immune system usually removes abnormal or damaged cells.
• manipulate the immune system to help cancer cells to live and continue to grow. For instance, certain cancer cells trick the immune system to shield the tumor, instead of attacking the tumor.
• have multiple modifications in they have multiple changes in their chromosomes including deletions or duplications of chromosome components. Some cancer cells possess double what is normal chromosomes.
• depend on various kinds of nutrients that normal cells do not. Furthermore, some cancer cells produce energy by consuming nutrients in a different method than normal cells. The result is that cancer cells can expand faster.

Cancer different parts of the body

A lot of times cancer cells rely in such a large part on these unusual actions that they cannot endure without them. Researchers have capitalized on this and have developed therapies that target the abnormalities that cancerous cells exhibit. For instance, certain cancer treatments stop blood vessels from expanding towards tumors and thereby depriving the tumor of the nutrients it requires. Differentialities between cancer cells and Normal Cells.

Every cancer sufferer has distinct genetic mutations. As the number of cancers continues to increase, further changes may develop. Within same cancer, different cells could exhibit different genetic modifications.

Types of Cancer

The tumor suppressor genes are involved in controlling the growth of cells and their division. Cells that have certain mutations in tumor suppressor genes could expand in an uncontrolled way.

DNA repair genes play a role in repairing damaged DNA damage. Cells that have mutations in these genes are more likely to undergo further mutations in the other genes as well as changes in their chromosomes. This includes deletions or duplications of chromosome components. These mutations can result in cells becoming cancerous.

What are the four different kinds of cancer?