An abnormal mass of undifferentiated cells within a multicellular organism. They can interfere with vital body functions and absorb nutrients needed elsewhere. They can be malignant (cancerous), which means they will grow rapidly and spread to other parts of the body or cause more tumors to form elsewhere, or be benign, which means that they will generally grow much more slowly and stay put in one area.
a lump due to uncontrolled cell division, may be benign or malignant. Malignant tumors cause cancer. Tumors are able to spread to other parts of the body (metastasize) and begin secondary growths at these other sites.
A mass that forms within otherwise normal tissue, caused by the uncontrolled growth of a transformed cell. tumor suppressor gene A gene whose protein products inhibit cell division, thereby preventing uncontrolled cell growth (cancer). tundra A biome at the extreme limits of plant growth; at the northernmost limits, it is called arctic tundra, and at high altitudes, where plant forms are limited to low shrubby or matlike vegetation, it is called alpine tundra. turgid( tur-jid) Firm; walled cells become turgid as a result of the entry of water from a hypotonic environment.
A growth that may be malignant or nonmalignant, good or bad, fast- or slow-growing. The term indicates the unusual presence of a type of tissue (group of cells) in an area in which it is not commonly found in most individuals. The word tumor is another term the author considers a "wastebasket" term (no talent for a doctor to use it and it provides little information to a trained specialist or an informed patient). For example, melanoma, a tumor, may kill a person. As well, a benign mole on the tip of the nose or the on the front of the knee can be considered a tumor, although it will not harm anyone. It is important to know that the word tumor does not necessarily mean something is deadly or even harmful to life.
An abnormal, spontaneous growth of new tissue. Tumors are either benign, noncancerous tumors that do not spread to other tissues or parts of the body or malignant, cancerous tumors that invade other tissues and parts of the body.
a new growth which produces a localized enlargement of a part, or an organ, has no tendency to a spontaneous cure, has no useful function, in most cases tends to grow during the whole of the individual's life
intracranial mass or abnormal growth in or around the brain. These may be benign or malignant. Types of primary growth tumors are called gliomas, meningiomas, acoustic neuromas, and pituitary tumors. Certain tumors affect primarily children including craniopharyngioma, medulloblastoma, and cerebellar astrocytoma.
Solid mass of abnormal tissue that can be malignant or benign; term commonly used by the medical profession to mean a cancerous growth because it is considered to be a more sensitive word than cancer, although it can be misinterpreted.
The growth of abnormal tissue with no useful function to the organism. Tumors are known either as malignant or benign. Malignant tumors are known to grow continuously and have the ability to invade healthy tissues, eventually leading to death. Benign tumors tend to stop growing once they reach a certain point. And normally don't result in death.
An abnormal mass of tissue in the body. Tumors can be benign or cancerous (malignant). Benign tumors do not spread to other parts of the body. Malignant tumors can invade nearby normal tissues and spread (metastasize) to other parts of the body. Malignant tumors grow faster than benign tumors. Cancer is the common name for all malignant tumors.
An abnormal mass of tissue. Tumors are a classic sign of inflammation, and can be benign or malignant (cancerous). There are dozens of different types of tumors. Their names usually reflect the kind of tissue they arise in, and may also tell you something about their shape or how they grow. For example, a medulloblastoma is a tumor that arises from embryonic cells (a blastoma) in the inner part of the brain (the medulla). Diagnosis depends on the type and location of the tumor. Tumor marker tests and imaging may be used; some tumors can be seen (for example, tumors on the exterior of the skin) or felt (palpated with the hands). See the entire definition of Tumor
Tumors or cancer: A registry of tumors that have been diagnosed histologically. There is no unaffected category in the registry as it is not practical at this time to carry out a screening procedure. All of the tumors other than Histiocytosis and Mastocytoma are carried in the research data base and not reported on the KinReport. Seventy different tumor types are in the research data base.
an abnormal mass of tissue that is not inflammatory, arises from cells of preexistent tissue, and serves no useful purpose. A tumor results when cells divide more than they should or do not die when they should.
An abnormal growth of tissue (lump). Tumors can be either benign (not cancer) or malignant (cancer). IF YOU OR YOUR HEALTH CARE PROVIDER FIND A LUMP IN YOUR BREAST, YOU SHOULD REQUEST A BREAST CANCER SCREENING. If you do not have a Health Care Provider, call your county medical society, or one of the numbers listed below.
(TOO-mur) A circumscribed, noninflammatory growth arising from existing tissue, but growing independently of the normal rate or structural development of such tissue and serving no physiological function.
Tumor or tumour literally means "swelling", and is sometimes still used with that meaning. Tumor meaning swelling is one of the five classical characteristics of inflammation. However, the term is now primarily used to denote abnormal growth of tissue.