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Tumor - Dictionary Definition and Overview |
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Tumor : (noun)
1: an abnormal new mass of tissue that serves no purpose [syn:
tumour, neoplasm]
Based on WordNet 2.0
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Tumor : \Tu"mor\, n. [L., fr. tumere to swell: cf. F. tume['u]r.
See Tumid.]
1. (Med.) A morbid swelling, prominence, or growth, on any
part of the body; especially, a growth produced by
deposition of new tissue; a neoplasm.
2. Affected pomp; bombast; swelling words or expressions;
false magnificence or sublimity. [R.]
Better, however, to be a flippant, than, by a
revolting form of tumor and perplexity, to lead men
into habits of intellect such as result from the
modern vice of English style. --De Quincey.
Encysted tumor, a tumor which is inclosed in a membrane
called a cyst, connected with the surrounding parts by the
neighboring cellular substance.
Fatty tumor. See under Fatty.
Innocent tumor, or Benign tumor, one which does not of
itself threaten life, and does not usually tend to recur
after extirpation.
Malignant tumor, a tumor which tends continually to spread,
to become generalized in different parts of the body, and
to recur after extirpation, and which, if left to itself,
causes death.
Based on Webster's Revised Unabridged Dictionary
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Tumor : Tumor: 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).
Treatment is also specific to the location and type of the tumor. Benign tumors can sometimes simply be ignored, or they may be reduced in size (debulked) or removed entirely via surgery. For
cancerous tumors, options include chemotherapy , radiation, and surgery. See also blastoma, carcinoembryonic antigen test, desmoid tumor, ear tumor, epidermoid carcinoma, epithelial carcinoma,
esophageal cancer, syringoma, fibroid, tumor marker.
Based on Webster's Revised Unabridged Dictionary (1913)
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