PATHOLOGY

Detailed explanation-1: -Malignant tumors are cancerous. They develop when cells grow uncontrollably. If the cells continue to grow and spread, the disease can become life threatening. Malignant tumors can grow quickly and spread to other parts of the body in a process called metastasis.

Detailed explanation-2: -Malignant tumors are cancerous (ie, they invade other sites). They spread to distant sites via the bloodstream or the lymphatic system. This spread is called metastasis. Metastasis can occur anywhere in the body and most commonly is found in the liver, lungs, brain, and bone.

Detailed explanation-3: -Most malignant brain tumours are caused by a cancer that started somewhere else in the body and spread to the brain, through the bloodstream. These are known as secondary tumours. Cancers that can spread to the brain include lung cancer, breast cancer, bowel cancer and melanoma skin cancer.

Detailed explanation-4: -A malignant tumor, however, is capable of both invading surrounding normal tissue and spreading throughout the body via the circulatory or lymphatic systems (metastasis). Only malignant tumors are properly referred to as cancers, and it is their ability to invade and metastasize that makes cancer so dangerous.