General Science Bullet – All you need to know about Cancers – Capsule 1
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One of the deadliest diseases in India and worldwide, Cancer, continues to mercilessly claim millions of lives every year. Approximately 7 lakh Indians die annually with some form of cancer while more than 10 lakh are newly diagnosed for cancers. This article will discuss the basics of Cancer.
What is a Cancer?
- It is a disease caused by rapid and uncontrollable division of abnormal cells in the body.
- Normal cells grow and divide after reaching maturity by a process called mitosis and die after certain period in an orderly way termed as apoptosis (programmed cell death). However, cancerous cells do not die but divide rapidly.
- This abnormal division gives rise to a lump of cells that contain millions of cells called neoplasm or tumor.
- Tumors are of two types: malignant and benign
- Benign tumors are non-cancerous forms of cell growths. They divide uncontrollably but do not spread to the other parts and remain localised to their point of origin. For E.g. uterine fibroids, skin moles.
- Malignant tumors are cancerous forms of cell growths. Not only do they divide uncontrollably but also spread to the other organs and tissues. This phenomenon is known as metastasis.
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