Cancer

Cancer is a disease in which cells, almost anywhere in the body, begin to divide uncotrollably. A tumor is when this uncontrolled growth occurs in solid tissue such as an organ, muscle or bone. Tumours may spread to surrounding tissues through the blood and lymph systems. Cancer treatment aims to eradicate these abnormal cells, or to slow or to stop them from spreading. What types of solid tumors are there? There are two types of solid tumors: malignant (cancerous) and benign (noncancerous). Cancerous tumors can invade nearby tissues in the body, and as they grow, some cells may travel to other places in the body to form other, "secondary" tumors, which are also known as metastases. Examples of solid malignant tumors include carcinomas and sarcomas. Carcinomas are cancers that start in the cells that make up the tissue lining organs such as the liver or the kidneys. Sarcomas are cancers that form in the connective tissues of the body, such as muscles, bones and nerves. Benign tumors do not spread or travel throughout the body. Most are not life-threatening, aside from certain brain tumors that can still cause inflammation and put pressure on delicate tissues surrounding the tumor. A doctor can perform a biopsy to determine whether a tumor is cancerous or benign..

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