About this document

Comprehensive Guide to Cancer Basics is a document available to read on EtoBox.

This document provides an overview of cancer, including its definition, causes, development and spread. Cancer occurs when normal cells mutate into abnormal cells that proliferate uncontrollably. It can be caused by viruses, chemicals, radiation, hereditary factors and more. Cancerous tumors are classified based on their behavior and tissue of origin. The disease involves multiple genetic mutations over time that allow cells to evade control mechanisms and invade other tissues.

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EN