Tumors are abnormal growth of cells in an uncontrolled manner and are of two types viz. benign tumors and malignant tumors.
Benign tumors increase in size but are often harmless until they are near any vital organ.
Malignant tumor is termed as Cancer (or a neoplasm meaning a new growth) which proliferates in an uncontrolled way causing in some cases, to metastasize (spread).
Cancer is not one disease. It is a group of diseases. Cancer is NOT contagious.
Cancer can involve any tissue of the body and have many different forms in each body area. Most cancers are named for the type of cell or organ in which they start. If a cancer spreads (metastasizes), the new tumor bears the same name as the original tumor.
The frequency of a particular cancer may depend on gender.
In India oral cancers are most common type of malignancy in men & breast cancer and cervix cancer in women.
Cancer is the Latin word for crab. The ancients used the word to mean a malignancy, doubtless because of the crab-like tenacity a malignant tumor sometimes seems to show in grasping the tissues it invades.
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