| 释义 |
‖ teratoma Path.|tɛrəˈtəʊmə|
Pl. teratomata |-ˈtɒmətə|.
[mod.L., f. Gr. τέρας, τερατ- (see terata), after sarcoma, etc.]
A tumour, esp. of the gonads, characteristically formed of numerous distinct tissues and believed usually to arise from germ cells or their precursors.
1879Amer. Jrnl. Med. Sci. LXXVII. 91 (heading) Extirpation of teratoma; or, teratoid tumor. Ibid. 93 To such tumors Virchow has applied the term teratoma. 1890Billings Nat. Med. Dict., Teratoma, a tumor composed of various tissues or systems of tissue, as bone, teeth, etc., which do not normally exist at the place where the tumor grows. 1899Allbutt's Syst. Med. VI. 100 Teratoma or dermoid cyst is another variety of dermoid tumour... It is affirmed that a teratoma never originates in the lung. 1906[see Langhans]. 1948R. A. Willis Path. of Tumours lxi. 940 A teratoma is a true tumour or neoplasm composed of multiple tissues of kinds foreign to the part in which it arises. 1975Nature 6 Nov. 12/1 Teratomas and teratocarcinomas are rare tumours which arise in the gonads, and contain a whole variety of differentiated tissues of ectodermal, mesodermal and endodermal origin (such as skin, nerve, muscle, cartilage, gut and lung), mixed together in a disorganised mass. 1979Sci. Amer. Apr. 87/1 When all the embryonal cells differentiate into various kinds of normal tissue, the tumors stop growing: they are benign and are usually referred to simply as teratomas.
Hence teraˈtomatous a., of the nature of a teratoma.
1891in Cent. Dict. 1893Index-Catal. Library Surgeon-General's Office, U.S. Army XIV. 896/1 (heading) Tumors (teratomatous). 1948Martin & Hynes Clinical Endocrinol. ix. 193 A few arrhenoblastomata have been teratomatous, containing cartilage and other tissues. 1962Punch 7 Nov. 658/2 A teratomatous growth of mixed tissues, probably of only low malignancy. |