Lesion meaning: Lesion answers are found in the

lesion answers are found in the Taber's Medical Dictionary powered by Unbound Medicine. Available for iPhone, iPad, Android, and Web. A lesion is any abnormal change or damage in tissue or organ, while a tumor is an abnormal mass or growth of cells. Learn about the causes, types, symptoms, diagnosis, and treatment of lesions and tumors, and how to distinguish between them. Lesion Definition A lesion is an area of inflammation in a tissue that suffered trauma or the impact of chronic illness. Typically, a lesion involves an abnormal structural change to a tissue. So, it is often defined as a site of abnormal tissue change. These changes can take place in the form of wounds or bruising, but is also a term used by oncologists to describe wounds caused by malignant or benign (innocuous) cancers. Lesions, of course, vary in severity depending on their size and ... A lesion can occur anywhere in or on the body, such as the skin, blood vessels, brain, and other organs. Examples of lesions include wounds, ulcers, abscesses, sores, cysts, and tumors.