scholarly journals Absence of the Horizontal Portion of the Left Portal Vein Diagnosed by Ultrasound and Computed Tomography

2021 ◽  
Vol 5 (4) ◽  
pp. 321
Author(s):  
Cheng, MM Yanling ◽  
Liu, MD, PhD Xi ◽  
Zhu, BM Wenxiao ◽  
Gao, BM Chuang ◽  
Sun, BM Hao ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Left Portal Vein ◽  
Horizontal Portion

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.

Computed Tomography with 3d Reconstructions in Planning Two Stage Hepatectomy ALPPS for Alveococcosis of the Liver (Case Report)

2018 ◽  
pp. 81-86 ◽  
Author(s):  
А. Башков ◽  
A. Bashkov ◽  
Ю. Удалов ◽  
Yu. Udalov ◽  
Ж. Шейх ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Portal Vein ◽  
Hepatic Artery ◽  
Abdominal Cavity ◽  
Diagnostic Information ◽  
3D Reconstructions ◽  
Liver Insufficiency ◽  
The Future ◽  
Left Portal Vein

Purpose: To provide case report of alveococcosis of the liver, when ALPPS procedure was planned based on diagnostic information and 3D reconstructions of computed tomography. Material and methods: Computed tomography with bolus intravenous administration of 100 ml of contrast media Ultravist-370 was performed on multislice computed tomography Aquilion 64 Toshiba. Results: The preoperative planning is the crucial part of treatment to minimize or exclude liver insufficiency after resection. The minimal volume of remnant of the liver should be more than 25–30 % for normal parenchyma and more than 40 % in case of chronic pathologic diffuse process in the liver for example steatosis or cirrhosis. If the estimated volume of remnant is not enough to perform resection, two staged hepatectomy should be planned. According to CT data, the parenchyma of segment S2 and most of parenchyma S3, which together constitute the so-called lateral sector of the liver, were preserved. It allowed to plan an extended right-sided resection. However, the volume of the future liver remnant was 410 ml – about 30 % of the functioning part of the liver which was considered insufficient in view of the presence of prolonged biliary hypertension and a decreasing density of the parenchyma. Vascular elements of the left lateral sector – left hepatic artery, left hepatic vein and inferior vena cava were intact, however, there was a possibility of involving the wall of the left portal vein, due to its prolonged contact with the surface of the parasitic lesion. Using the segmentation tool on radiology workstation, a 3D surface model of the liver was built, where the localization of the pathologic lesion and its relationship with the main vessels were visually demonstrated. After preoperative preparation, a decision was made to perform ALPPS procedure. At the first stage intraoperative the adhesion of the parasitic lesion with the left portal vein was confirmed, which required its resection and plastic. Also in addition to the usual volume of the operation, an atypical resection of the S3 segment and Roux-en-Y choledochojejunostomy were performed. On the 7th day after the 1st stage, a control CT scan was performed, at which an increase in the volume of the remnant to 630 ml (46 % of the preserved parenchyma of the liver) was recorded. The hepatic artery, portal and hepatic veins of the future liver remainder were enhanced homogenously; drainage was traced in the area of parenchyma dissection after the second, l stage of the operation, CT was performed in 15 days to exclude liquid accumulations in the abdominal cavity and to assess the condition of the remnant due to a moderate increasing of the level of direct bilirubin up to 98 μmol/l. No pathological changes in the abdominal cavity were revealed, only free pleural effusion was observed in the pleural cavities with partial atelectasis of the lower lobes of the lungs. After conservative therapy the liver insufficiency was resolved. On the 20th day after the operation, the patient was discharged. Conclusion: In the described clinical case, computed tomography with 3D reconstructions made possible to obtain complete diagnostic information that was necessary for the surgeon to assess the resectability of the pathological process and to plan the type of surgical intervention.

Congenital absence of the horizontal portion of the left portal vein

2008 ◽  
Vol 35 (1) ◽  
pp. 29-30
Author(s):  
Kayoko Furukawa ◽  
Hideaki Ishida ◽  
Toru Ishii ◽  
Mamiko Yamada
Keyword(s):  
Portal Vein ◽  
Congenital Absence ◽  
Left Portal Vein ◽  
Horizontal Portion

Congenital absence of the horizontal portion of the left portal vein: ultrasound findings

2000 ◽  
Vol 10 (2) ◽  
pp. 362-364 ◽  
Author(s):  
M. Sato ◽  
H. Ishida ◽  
K. Konno ◽  
H. Naganuma ◽  
T. Komatsuda ◽  
...  
Keyword(s):  
Portal Vein ◽  
Congenital Absence ◽  
Ultrasound Findings ◽  
Left Portal Vein ◽  
Horizontal Portion

Previous portal hypertension surgery negatively affects results of mesenteric to left portal vein bypass

2008 ◽  
Vol 43 (1) ◽  
pp. 114-119 ◽  
Author(s):  
Anthony C. Chin ◽  
Fiona Thow ◽  
Riccardo A. Superina
Keyword(s):  
Portal Hypertension ◽  
Portal Vein ◽  
Vein Bypass ◽  
Left Portal Vein

scholarly journals A Case of Solid Pseudopapillary Neoplasm Spontaneously Ruptured Into the Duodenum: Case Report

2019 ◽  
Vol 103 (9-10) ◽  
pp. 461-467
Author(s):  
Seiji Natsume ◽  
Yoshiki Senda ◽  
Tsuyoshi Sano ◽  
Seiji Ito ◽  
Koji Komori ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Portal Vein ◽  
Rare Case ◽  
Pancreatic Head ◽  
Resected Specimen ◽  
Solid Pseudopapillary Neoplasm ◽  
Contrast Radiography ◽  
Pancreatic Head Tumor

There have been no reports of ruptured solid pseudopapillary neoplasm (SPN) into adjacent organs. A 22-year-old female was referred to our hospital for treatment of a pancreatic head tumor. Computed tomography (CT) examination at our hospital showed a 5-cm tumor containing air, although CT at a previous hospital revealed an 8-cm tumor without air. Thus, a spontaneous rupture of the tumor into the duodenum was suspected. Subtotal stomach preserving pancreaticoduodenectomy with combined resection of the portal vein was performed. Contrast radiography of resected specimen showed the medium injected into the tumor leaking out from the 2nd portion of the duodenum. Histologically, the patient was diagnosed as SPN. Microscopic invasion to the portal vein and duodenum were also confirmed. She did not experience any postoperative complications and has remained well without any signs of recurrence during 2 years of follow-up. Although there have been 14 studies reporting ruptured SPN, this is the first report of SPN that spontaneously ruptured into the duodenum. An extremely rare case of SPN of the pancreatic head that spontaneously ruptured into the duodenum was reported.

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.

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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