Cite this page: Ziadie MS. Accessory (succenturiate) lobe. PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/placentaaccessory.html. Accessed May 30th, 2020.
Definition / general
- One or multiple accessory lobes connected to the main disc by blood vessels that are at risk for hemorrhage and thromboemboli
- Seen in 3% of placentas
- Due to focal noninvolution of chorionic laevae
- Main placental disc is attached to a smaller portion of placenta by fetal vessels and membranes