<prompt> The portal vein is related to all, except -PancreasGall bladderInferior vena cavaCBD  <response>: Important relations about portal veinInfraduodenal parti Anterior:- Neck of the pancreasiiPosterior:- IVCRetroduodenal parti Anterior:- 1st part of the duodenum, bile duct, gastroduodenal arteryiiPosterior:- IVCSupraduodenal parti Anterior:- Hepatic artery, bile ductiiPosterior:- IVC, separated by epiploic formal 