| 释义 |
embryoma Path.|ɛmbrɪˈəʊmə|
Pl. -mata.
[f. embryo + -oma.]
A tumour composed of tissues resembling those of the fœtus or thought to arise from fœtal tissues or fœtal remnants: applied esp. to some malignant tumours seen in childhood.
1903J. H. Teacher in Jrnl. Obstet. & Gynæcol. July 54 Either at once (congenital tumours) or after an interval (mixed tumours of later life) this developes into an imperfect organism—a teratoma or embryoma. 1954L. B. Arey Developmental Anat. (ed. 6) x. 180 An immature type [of teratoma] with poorly differentiated tissue (embryoma) is highly proliferative and usually malignant. 1968B. M. Patten Human Embryol. (ed. 3) viii. 167 To be classed as an embryoma a tumor must exhibit enough of the fundamental parts characteristically present in a normal embryo to suggest that it arose from an aggregation of cells which under other conditions might have produced a complete individual. |