Inferior right hepatic vein on routine contrast-enhanced CT of the abdomen: prevalence and correlation with right hepatic vein size

Landmarks to identify segmental borders of the liver: A review prepared for PAM‐HBP expert consensus meeting 2021

“…35,38 However, it does not always run through the inferior (caudal) area of the right intersection plane (the border between S5/ S6) (Figure 5), and there are sometimes alternative landmark veins which drain into the middle hepatic vein and/or inferior right hepatic vein. [34][35][36][37][38][39][40][41]72,109 Another common topic was the so-called anterior or ventral fissure in the right anterior section. The division patterns of the right anterior section have been the focus in many studies, since its portal tributaries seems to especially have numerous variations.…”

“…In the articles, right hepatic vein has been extensively studied as an anatomical landmark in the superior (cranial) area of the right intersectional plane, since it often courses the plane 35,38 . However, it does not always run through the inferior (caudal) area of the right intersection plane (the border between S5/S6) (Figure 5), and there are sometimes alternative landmark veins which drain into the middle hepatic vein and/or inferior right hepatic vein 34‐41,72,109 …”

“…The main trunk of right hepatic vein always runs along the superior (cranial) area of the right intersectional plane 35,38 . On the other hand, it does not always run through the inferior (caudal) area of the right intersection plane (the border between Couinaud's S5/S6) 34‐41,72,109 …”

“…The main trunk of right hepatic vein always runs along the superior (cranial) area of the right intersectional plane. 35,38 On the other hand, it does not always run through the inferior (caudal) area of the right intersection plane (the border between Couinaud's S5/ S6) [34][35][36][37][38][39][40][41]72,109 portal vein branch, particularly in the setting of MILAR, as the latter requires to be accustomed to IOUS and a careful manipulation of the needle. 90 Lastly, a real-time navigation system is a new promising technology, which is expected to help surgeons to identify intersegmental/sectional planes in the future, since nowadays this technique is experienced only in a few centers.…”

Untitled

“…In the cases where the hepatic veins are partially or fully obstructed; Budd-Chiari syndrome, congestive hepatomegaly, and veno-occlusive diseases can develop(Fang et al, 2012). Thus, any variations encountered within the hepatic veins that could alter the hepatic venous outflow and drainage volume are of importance, especially in cases where the RHV is used as a graft and the presence of accessory veins and tributaries exist (Uchida et al,2010).The presence of accessory veins or tributaries from the RHV or MHV is of significance during resections of the right anterior or posterior segments of the right lobe(Sharma et al, 2019;Watanabe et al, 2020). This occurrence of accessory hepatic veins or tributaries is of importance as they could traverse the hepatectomy field and create a source of bleeding and graft ischemia when these vessels are damaged during surgery, leading to cardiac arrest or the origin of an air embolism(Shilal and Tuli, 2015;Paspulati, 2017).…”