placental site trophoblastic tumor


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pla·cen·tal site troph·o·blas·tic tu·mor

a tumor usually arising in the uterus of parous women during reproductive years. Histologically, the tumor consists of a predominance of intermediate trophoblastic cells with fibrinoid material and vascular invasion.

placental site trophoblastic tumor

Gynecologic pathology
A rare uterine neoplasm of gestational tissue of reproductive age ♀, presenting as a 'missed' abortion, which ranges from microscopic to massive and from 'timid' to highly aggressive that actively secretes human placental lactogen Prognosis 10% mortality

placental site trophoblastic tumor

Abbreviation: PSTT
A rare form of gestational trophoblastic disease simulating carcinoma and arising at the attachment of the placenta to the uterine wall.
See also: tumor