【医】 良性瘤

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; a tumor which has not metastesized.

{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.