What Is Cancer Exactly? Tumor Biology & Cancer Causes

Cancer is a disorder where a group of cells ignores normal cell division principles and grows uncontrollably. Because cancerous cells are self-sufficient, they do not respond to the signals that initiate the normal cell cycle, resulting in the uncontrolled development and proliferation of altered cells.

If malignant cells continue to increase, it can be deadly. 90% of cancer-related fatalities are caused by cancer cells spreading to other tissues; a process termed metastasis. During mitosis, normal cells develop in an interdependent way, reliant on external growth stimuli. As a result, when the availability of these growth signals becomes insufficient or ceases, cells …read more