RT Journal Article T1 Fetal intrahepatic gallbladder and topographical anatomy of the liver hilar region and hepatocystic triangle A1 Wang, Bao Jian A1 Kim, Ji Hyun A1 Yu, Hee Chul A1 Rodríguez Vázquez, José Francisco A1 Murakami, Gen A1 Cho, Baik Hwan AB The fetal gallbladder (GB) is embedded in a deep fossa surrounded by the liver parenchyma. Using 15 specimens with intrahepatic GB (crown–rump length 45–92 mm; approximately 9–13 weeks of gestation), we assessed the fetal topographical anatomy of the hepatocystic triangle and the porta hepatis. The cystic duct displayed a long upward course (0.9–4.5 mm along the supero-inferior axis) from the GB, along the duodenum, to the common bile duct in the hepatoduodenal ligament, via an independent mesentery separated from liver parenchyma by a recess of the peritoneal cavity. Notably, the course varied in length among specimens, not among stages. At the porta hepatis, we were able to distinguish the supraportal course of the posterior right hepatic duct overriding a portal vein branch to segment 8 (6/15) from the other, infraportal course (9/15). In the latter type, the portal vein bifurcation was superior to the cystic duct course. Two margins of the hepatocyctic triangle were very long in fetuses because of the inferiorly located intrahepatic GB. Thus, the triangle seems to be difficult to identify in prenatal ultrasound. During changes in location after 9 weeks, the GB fundus remains attached to the liver because the cystic artery was often embedded in the liver parenchyma. A failure in the embedding and re-exposure process of the GB may result in anomalous peritoneal folds around the GB. Clin. Anat. 25:619–627, 2012. © 2011 Wiley Periodicals, Inc. PB Wiley SN 0897-3806 YR 2011 FD 2011-10-24 LK https://hdl.handle.net/20.500.14352/111191 UL https://hdl.handle.net/20.500.14352/111191 LA eng NO Wang BJ, Kim JH, Yu HC, Rodríguez-Vázquez JF, Murakami G, Cho BH. Fetal intrahepatic gallbladder and topographical anatomy of the liver hilar region and hepatocystic triangle. Clin Anat. 2012 Jul;25(5):619-27. doi: 10.1002/ca.21288 DS Docta Complutense RD 7 abr 2025