| placental sulfatase deficiency | <enzyme> An enzyme defect in the placenta which results in failure of conversion of 16a-hydroxydehydroepiandrosterone to estriol; women with this condition rarely enter into spontaneous labour. (05 Mar 2000) |
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| placental thrombosis | Thrombosis of the veins of the uterus at the placental site. (05 Mar 2000) |
| placental transfusion | Return to the newborn via the umbilical vessels some of the foetal placental blood. (05 Mar 2000) |
| purified placental protein | human placental lactogen |
| dystocia, placental | Trouble delivering the placenta (the afterbirth). (12 Dec 1998) |
| trophoblastic tumour, placental site | A tumour that arises from the trophoblast of the placental bed and is composed mainly of cytotrophoblastic cells. It encompasses lesions of low- and high-grade malignancy. (holland et al., cancer medicine, 3d ed, p1691) (12 Dec 1998) |