decidua

(redirected from decidua basalis)
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Related to decidua basalis: decidua parietalis, decidua capsularis

decidua

[di′sij·ə·wə]
(medicine)
The endometrium of pregnancy and associated fetal membranes which are cast off at parturition.
References in periodicals archive ?
We performed a study to isolate MSCs residing in the human placental decidua basalis (PDB-MSCs) Wharton's Jelly (WJ-MSCs) amniotic membrane (AM-MSCs) and characterize in reference to their morphology surface phenotypes and differentiation potential in vitro in order to obtain an alternative source of MSC for BM-MSC for therapeutic clinical applications.
Invasive placental implantation occurs when there is a defect or absence of the decidua basalis, which is replaced by loose connective tissue.
21,38-44) Clusters of multinucleate giant cells in the decidua basalis and excessive numbers of extravillous trophoblasts are less commonly seen in this than in other patterns of diffuse hypoxic placental injury, (21) most likely because of the association of PR with deep trophoblastic, myometrial invasion, which was proven, at least in maternal anemia.
As a consequence of partial or total absence of decidua basalis and imperfect development of the fibrinoid layer, placental villi are attached to the myometrium in placenta accreta, actually invade the myometrium in increta, or penetrate the myometrium in placenta percreta.
Although it can be clinically suspected both antenatally and perinatally, the diagnosis is histological, based on the absence or poor development of the decidua basalis combined with varying degrees of villus infiltration.
Normally the placenta adheres to decidua basalis layer, allowing for a smooth separation of the placenta from the uterus after delivery.
11,13,14) Recently, a lesion of leukocytoclastic necrosis of the decidua basalis, histologically similar to LN and similar to LN associated with preeclampsia, preterm birth, and decreased fetal growth, was described, but this lesion involved the maternal floor.