Intrahepatic veno-venous collateralization and misrepresentative hepatic venous pressure gradients in children.
Eric James MonroeWhitney Shofner MichalskyKevin S H KooGiridhar M ShivaramAnthony N HageEvelyn K HsuSimon P HorslenJeffrey Forris Beecham ChickPublished in: Pediatric radiology (2020)
HV-HV collateralization is frequently observed in children undergoing wedged portal venography and leads to misrepresentative hepatic venous pressure gradients. All patients undergoing hepatic venous pressure gradient measurement should have wedged venography to identify HV-HV collaterals and to qualify measured pressures. Additional techniques to obtain representative pressures in the presence of HV-HV collaterals warrant further investigation.