Nakayama D, Masuzaki H, Yoshimura S, Moriyama S, Ishimaru T
Department of Obstetrics and Gynecology, Nagasaki University, School of Medicine, Japan.
Am J Obstet Gynecol. 1998 Jul;179(1):256-7. doi: 10.1016/s0002-9378(98)70281-9.
We report a case of monozygotic twins. One twin had a single umbilical artery and the other co-twin had congenital heart disease. This case and a review of the literature suggest that local environmental factors are important in the pathogenesis of these malformations although genetic factors cannot be excluded.
