Who Has Zonary Placenta

A zonary placenta consists of a belt-shaped band of tissue surrounding the fetus, and is typically found in carnivores. Other animals with this type of placenta include cats and mustelids, a family of carnivores including the weasel, badger, marten and ferret.

What is complete Zonary placenta?

A zonary placenta also known as a ring-shaped placenta or annular placenta is an extremely rare variation in placental morphology where the placenta can appear as an annular ring. It can be a complete ring of placental tissue, but more often, tissue atrophy to part of the ring can results in a horseshoe shape placenta.

What is Circumvallate placenta in pregnancy?

Circumvallate placenta is a rare condition that occurs when the amnion and chorion fetal membranes of the placenta fold backward around the edges of the placenta. Sometimes, a doctor may discover a circumvallate placenta using an ultrasound. In other cases, they may not diagnose the condition until delivery.