Segmental branching pattern of the left portal vein: Anatomical characteristics and clinical implications

2017 ◽  
Vol 31 (8) ◽  
pp. 1122-1128
Author(s):  
Haythem Najah ◽  
Houssem Ammar ◽  
Rahul Gupta ◽  
Moncef Hamdoun ◽  
Abdelwaheb Morjane ◽  
...  
Keyword(s):  
Portal Vein ◽  
Clinical Implications ◽  
Branching Pattern ◽  
Anatomical Characteristics ◽  
Left Portal Vein

scholarly journals A study on branching pattern of main portal vein

2017 ◽  
Vol 06 (02) ◽  
pp. 152-157
Author(s):  
Chaitra BR ◽  
Seema Deepak ◽  
Dakshayani KR
Keyword(s):  
Portal Vein ◽  
Anatomical Variations ◽  
Branching Pattern ◽  
Main Portal Vein ◽  
Human Cadavers ◽  
Portal Vein Anatomy ◽  
Left Portal Vein ◽  
Clear Identification ◽  
Intimate Knowledge ◽  
Transplantation Procedures

Abstract Background: An intimate knowledge and awareness of branching patterns of main portal vein is necessary before hepatic surgeries. The presence of portal vein variants increases the risk of bile duct hilar anatomical variations also. This information may be of help for accurate radiological interpretation, to prevent complications like hemorrhage, difficult anastomosis in the recipient, ischemia in the graft and allograft failure at the time of liver transplantation. Hence the present study was conducted with the objective of observing the branching pattern of the main portal vein, to measure length of right portal vein and angle between right and left portal vein. Material and Methods: The present study was conducted on 84 liver specimens of human cadavers fixed with 5% formalin, collected from the Department of Anatomy and Forensic Medicine, MMC&RI, Mysore. The parameters were measured using image J software. Results: Bifurcation of main portal vein was seen in 75 liver specimens [89.3%]. Trifurcation of main portal vein was seen in 9 specimens [ 10.7%]. Mean angle between Right and left portal vein was 146.7°. Mean length of right portal vein was 2.27 cm. Conclusion: Knowledge of portal vein variations is critically significant in surgical resection and transplantation procedures. Resection of any portion of liver should be well planned and clear identification of sub segments of liver is necessary before surgery. Surgeons and radiologists must have a thorough understanding of variants in portal vein anatomy in order to prevent injury to portal vein and for successful radiological interventions.

scholarly journals Value of preoperative computed tomography for meso-Rex bypass in children with extrahepatic portal vein obstruction

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Huiying Wu ◽  
Ning Zhou ◽  
Lianwei Lu ◽  
Xiwen Chen ◽  
Tao Liu ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Predictive Value ◽  
Extrahepatic Portal Vein Obstruction ◽  
Portal Vein Obstruction ◽  
Left Portal Vein ◽  
History Of ◽  
Associated Malformations ◽  
Sensitivity Specificity

Abstract Background Extrahepatic portal vein obstruction (EHPVO) is the most important cause of hematemesis in children. Intrahepatic left portal vein and superior mesenteric vein anastomosis, also known as meso-Rex bypass (MRB), is becoming the gold standard treatment for EHPVO. We analyzed the value of preoperative computed tomography (CT) in determining whether MRB is feasible in children with EHPVO. Results We retrieved data on 76 children with EHPVO (50 male, 26 female; median age, 5.9 years) who underwent MRB (n = 68) or the Warren procedure (n = 8) from 2013 to 2019 and retrospectively analyzed their clinical and CT characteristics. The Rex recess was categorized into four subtypes (types 1–4) depending on its diameter in CT images. Of all 76 children, 7.9% had a history of umbilical catheterization and 1.3% had leukemia. Sixteen patients (20 lesions) had associated malformations. A total of 72.4% of Rex recesses could be measured by CT, and their mean diameter was 3.5 ± 1.8 mm (range 0.6–10.5 mm). A type 1, 2, 3, and 4 Rex recess was present in 9.2%, 53.9%, 11.8%, and 25.0% of patients, respectively. MRB could be performed in patients with types 1, 2, and 3, but those with type 4 required further evaluation. The sensitivity, specificity, positive predictive value, negative predictive value, and diagnostic accuracy of CT were 100%, 83.8%, 42.1%, 100%, and 85.5%, respectively. Conclusions Among the four types of Rex recesses on CT angiography, types 1–3 allow for the performance of MRB.

Re: Left Portal Vein as a Direct Source of Gastric Varices

1999 ◽  
Vol 22 (1) ◽  
pp. 85-86 ◽  
Author(s):  
Jiyong Ahn ◽  
James M. Cooper ◽  
Peter Park ◽  
Harold A. Mitty
Keyword(s):  
Portal Vein ◽  
Gastric Varices ◽  
Left Portal Vein
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