Truncus arteriosus Alaatin Kacar, MD Ender Birgul MD Ozcan Yilmaz, MD Kadir Yamn, MD Article Published: Jun 8, 2006 Balikesir, Turkey Definition This is a fetus at 24 weeks with a truncus arteriosus type 1. 28 weeks Discussion Board Start a discussion about this article Add to Favorites Favorite