title: Monozygotic Twinning.
abstract: This article discusses pathologies found in monozygotic twinning. Detailed information is provided regarding the development during monozygotic twin formation: embryo development, twin-to-twin transfusion syndrome, acardiac twinning, vanishing twins, conjoined twins, and Beckwith-Weidmann syndrome twins. An algorithm describing the approach for identifying pathology in a placenta with multiple pregnancies is presented.
authors.affiliation: Department of Pathology, UCSD Medical Center, University of California San Diego, 200 West Arbor Drive, San Diego, CA 92103, USA. Electronic address: kbenirschke@ucsd.edu.
authors.forename: Kurt
authors.initials: K
authors.lastname: Benirschke