Tumor

A fact sheet that discusses tumor grade and its role in prognosis. Explains concepts like normal cell biology and cell differentiation. National Cancer Institute Fact Sheet 5.9 (more...)

noun. a swelling on some part of the body; a mass of new tissue growth independent of its surrounding structures, having no physiological function; neoplasm: such tumors are ... (more...)

There are more than 120 types of brain tumors. Today, most medical institutions use the World Health Organization (WHO) classification system to identify brain tumors. (more...)

Alternative Names Mass; Neoplasm. Definition Return to top. A tumor is an abnormal growth of body tissue. Tumors can be cancerous (malignant) or non-cancerous ... (more...)

A tumor or tumour is the name for a swelling or lesion formed by an abnormal growth of cells (termed neoplastic) which may be benign or malignant. (more...)

Malignant neoplasm or malignant tumor: synonymous with cancer. Benign neoplasm or benign tumor: a tumor (solid neoplasm) that stops growing by itself, does not invade other tissues ... (more...)

Information on many different cancers includes symptoms, cancer detection and prevention, and treatment options. (more...)

Free articles and multimedia from The NY Times, including information on symptoms, diagnosis, treatments, tests, and surgical procedures, as well as current news and interviews ... (more...)

tumor n. An abnormal growth of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function; a (more...)

tumor /tu·mor/ (too´mer) 1. swelling, one of the cardinal signs of inflammation; morbid enlargement. 2. neoplasm; a new growth of tissue in which cell multiplication is ... (more...)