Category: P

The maternal part of the placenta.  

An outlying portion of the placenta that has not maintained its vascular connection with the decidua vera.  

An abnormal placenta in which the margin is thickened and appears to turn back on itself. A placenta that, rather than being thick in the center and thinning out towards the edges, is thicker at its edges and has a rolled-back look.  

A placenta that only partially covers the internal os of the uterus.  

A type of placenta accreta in which the myometrium is invaded to the serosa of the peritoneum covering the uterus. This may cause rupture of the uterus.  

A form of placenta accreta in which the chorionic villi invade the myometrium.  

A placenta in which a portion of the placental tissue is thinning or absent. A four-sided placenta with an irregular shape that has a central opening.  

A placenta whose membranes wrap over the edge of the fetal surface of the organ.  

A placenta in which the cotyledons have invaded the uterine musculature, resulting in difficult or impossible separation of the placenta. A placenta that has deeply embedded itself into the wall of the uterus, making it indistinguishable from the womb’s boundary, and preventing its normal separation from the uterus.  

The positioning or implantation of a object, such as a catheter or stent, within or near a body part.