scholarly journals The Congenital Absence of the Portal Vein

2020 ◽  
pp. 1-2
Author(s):  
M Lagrine ◽  
◽  
A Bourrahouat ◽  
I Ait Sab ◽  
M Sbihi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Superior Mesenteric Vein ◽  
Liver Tumors ◽  
Splenic Vein ◽  
Abdominal Ultrasound ◽  
Congenital Absence ◽  
Grade Ii ◽  
Upper Gastrointestinal ◽  
Portal Trunk

Congenital absence of the portal vein (CAPV) is a rare defect often accompanied by other abnormalities such as heart defect, skeletal anomalies and / or liver tumors [1]. We describe here a case of CAPV revealed by an upper gastrointestinal tract hemorrhage in a child aged 02 years and 8 months. The esogatro-duodenal fibroscopy revealed the presence of Esophageal varices grade II, abdominal ultrasound revealed a large liver with no visualization of the spleen. Subsequent abdominal computed tomography revealed the presence of a spleno-mesaraic trunk measuring 7 mm in anteroposterior diameter receiving the inferior and superior mesenteric vein and a small splenic vein draining by dilated peri-gastric and peri-esophageal leads. Associated with splenic hypoplasia and portal trunk atresia. The rest of the malformative assessment was negative

scholarly journals ANATOMICAL VARIANTS OF INFERIOR MESENTERIC VEIN ACCORDING ON THE DATA OF MULTISPIRAL COMPUTED TOMOGRAPHY

2021 ◽  
Vol 28 (4) ◽  
pp. 31-37
Author(s):  
Aleksandr V. Kolsanov ◽  
Maksim N. Myakotnykh ◽  
Aleksey A. Mironov ◽  
Renat R. Yunusov
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Superior Mesenteric Vein ◽  
Splenic Vein ◽  
Common Trunk ◽  
Inferior Mesenteric Vein ◽  
Mesenteric Vein ◽  
Vein Formation ◽  
Vascular Bed ◽  
The Common

Knowledge of the variants of the anatomical variability of the liver vascular bed can be of critical importance in liver resection, liver transplantation, laparoscopic operations, resection of the pancreas, surgical treatment of portal hypertension The main vessels of the hepatic portal vein system are characterized by pronounced anatomical variability in the formation of the portal vein trunk, the greatest variability is characterized by inferior mesenteric vein. The aim of the investigation was to study the variant anatomy of the inferior mesenteric vein according to multispiral computed tomography. The material was 100 multispiral computed tomograms of the abdominal organs from the archive of the clinics of the Samara State Medical University for 2018-2019. For mathematical modeling and the creation of three-dimensional models based on tomograms of the vascular bed, plugins were used in the programs «Luch» and «Autoplan». Variants of the portal vein formation, the angle of inflow of the inferior mesenteric vein into the superior mesenteric and splenic veins, the distance from the point of confluence of the inferior mesenteric vein to the point of confluence with the portal vein were studied. The study revealed that the inferior mesenteric vein in 40% of cases flows into the splenic vein, in 39% - into the angle of confluence of the superior mesenteric and splenic veins, in 16% - into the superior mesenteric vein. In 5% of cases, the absence of the inferior mesenteric vein was revealed. The angle of fusion of the inferior mesenteric vein with the superior mesenteric vein was statistically significantly greater than the angle of fusion of the inferior mesenteric vein with the splenic vein. The angles were 76.36 ± 1.53 ° and 64.89 ± 3.52 °, respectively (p = 0.004). The length of the common trunk of the inferior mesenteric and splenic veins was significantly greater than the common trunk of the mesenteric veins and amounted to 16.98 ± 1.09 mm and 9.37 ± 0.65 mm (p = 0.001), respectively. Thus, the study showed a high degree of anatomical variability of the inferior mesenteric vein.

scholarly journals ABERNETHY MALFORMATION AS A RARE INDICATION FOR LIVER TRANSPLANTATION: CASE REPORT

2019 ◽  
Vol 141 (5-6) ◽  
pp. 134-137
Keyword(s):  
Liver Transplantation ◽  
Case Report ◽  
Portal Vein ◽  
Liver Tumors ◽  
Splenic Vein ◽  
Vena Cava ◽  
Portal Blood ◽  
Type I ◽  
Abernethy Malformation ◽  
Congenital Cardiac Anomalies

Abernethy malformation or congenital agenesis of the portal vein (CAPV) is a rare malformation of the abdominal splanchnic venous system. This malformation is commonly found in children and is often associated with other malformations such as congenital cardiac anomalies and skeletal system disorders, as well as liver tumors. There are two types of Abernethy malformation. In type I, portal blood bypasses the liver completely, with the superior mesenteric vein and the splenic vein draining into the inferior vena cava separately (type Ia), or together (type Ib). There are no intrahepatic portal vein branches in the liver. Type II is a partial portocaval shunt in which portal blood partially supplies the liver. There is no unified therapeutic approach for all patients with Abernethy malformation, however, liver transplantation is recommended in patients with liver disease (encephalopathy, poor liver function) and those with liver tumors. In this case report we present a case of Abernethy type Ib malformation in a 17-year-old patient with chronic malaise and uper abdominal pain. During diagnostic work-up, an unresectable liver tumor was found and the patient was successfully treated with orthotopic liver transplantation.

scholarly journals Splenic vein reconstruction is unnecessary in pancreatoduodenectomy combined with resection of the superior mesenteric vein–portal vein confluence according to short-term outcomes

HPB ◽  
2017 ◽  
Vol 19 (9) ◽  
pp. 785-792 ◽  
Author(s):  
Haruyoshi Tanaka ◽  
Akimasa Nakao ◽  
Kenji Oshima ◽  
Kiyotsugu Iede ◽  
Yukiko Oshima ◽  
...  
Keyword(s):  
Portal Vein ◽  
Superior Mesenteric Vein ◽  
Splenic Vein ◽  
Short Term ◽  
Mesenteric Vein

Contribution of Superior Mesenteric Vein Flow to the Right and Left Lobes of the Liver Using CFD

2009 ◽  
Author(s):  
Stephanie M. George ◽  
Diego R. Martin ◽  
Don P. Giddens
Keyword(s):  
Portal Vein ◽  
Superior Mesenteric Vein ◽  
Splenic Vein ◽  
Normal Subjects ◽  
Diagnostic Techniques ◽  
Mesenteric Vein ◽  
Right Lobe ◽  
Computational Fluid Dynamics Cfd ◽  
The Right ◽  
End Stage

The incidence of cirrhosis, the end stage for many liver diseases, is rising and with it the need for better understanding of the progression of the disease and diagnostic techniques. The authors have noted that liver disease occurs preferentially in the right side of the liver which is the largest lobe. One hypothesis is that this is due to the composition of the blood that supplies the right lobe. The liver is fed by both the hepatic artery and the portal vein with the portal vein contributing about 80% of the blood supply. The portal vein (PV) is supplied by the superior mesenteric vein (SMV), which drains blood from the digestive track, and the splenic vein (SV), which drains blood from the spleen. Since the blood in the SMV is coming from the digestive track, it carries toxins and items absorbed during digestion. Toxins such as alcohol are known to damage the liver. Thus, our hypothesis is that the majority of the SMV flow feeds into the right portal vein and ultimately the right lobe of the liver. This study seeks to assess the validity of our hypothesis in four subjects by creating subject specific models in two normal subjects and two patients and using computational fluid dynamics (CFD) to calculate the SMV contribution to the right portal vein.

scholarly journals The topographo-anatomical conditions of reconstruction of the trunk and roots of the portal vein during gastropancreatoduodenal resection

2021 ◽  
Vol 23 (1) ◽  
pp. 33-40
Author(s):  
Iliya I. Dzidzava ◽  
Ivan V. Gayvoronsky ◽  
Andrei B. Kotiv ◽  
Sergey A. Alentyev
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Tumor Invasion ◽  
Vascular System ◽  
Splenic Vein ◽  
Vascular Reconstruction ◽  
Portal System ◽  
Vein Wall ◽  
Pancreatic Stump ◽  
Extended Contact

Topographic and anatomical variants of vascular plastics in extended gastropancreatoduodenal resection are substantiated. The anatomical study was performed on 30 organ complexes and 5 not embalmed human corpses. Significant variability of the roots and tributaries of the v. portae and their location near the pancreas was revealed. The extended contact of the mesenteric-portal segment with the head of the pancreas promotes the involvement of the veins of the portal system in the tumor process. The magistral type of the structure of the superior mesenteric vein was revealed in 19 cases, the distributed type in 11, which determines the conditions for vascular reconstruction. In the experiment the possibility of creation the formation of the direct mesenteric-portal anastomosis after duodenectomy was established in case of shifting the mobilized root of the mesentery of the small intestine in the direction of the liver gate. If splenic vein resection is necessary, adequate blood outflow from the stomach, spleen, and pancreatic stump can be provided by forming a distal splenic-renal anastomosis or, with a sufficient length of the splenic vein, a splenic-portal anastomosis. Based on computed tomography angiographs and intraoperative data 29 patients underwent extended gastropancreatoduodenal resection followed by vascular reconstruction. Tumor invasion of the trunk of the portal vein on computed tomography angiograms was represented by offset and the contact of the tumor with portal vein for over 10 mm (in 7 cases), the displacement and deformation of the portal vein tumor (in 5 cases), tumor infiltration of more than 50% of the circumference of the portal vein (in 3 cases). Extended contact with the tumor was identified in 9 cases, confluence stenosis of the portal vein in 5 cases. The tumor invasion into the portal vein, and the vascular system was restored by the formation of a port-portal anastomosis in 15 cases. Moreover at the reconstruction of mesenteric-portal segment we formed mesenteric-portal anastomosis in 10 cases. Also in 2 cases mesenteric-portal anastomosis in the confluence area of the iliac colon and jejunum tributaries was formed, in 1 case we formed anastomosis between the ileum-colon vein and the portal vein (with 1:2 diameter difference without patency disorders). In one single case we connected iliac colon vein wall with jejunum vein wall and formed anastomosis between them and portal vein. Distal splenorenal anastomosis was formed in 10 patients from this group. Spleno-portal anastomosis was formed in 3 patients above the junction of the portal and superior mesenteric veins.

scholarly journals Portal hypertension and reactive hemophagocytosis in pediatric visceral leishmaniasis

2015 ◽  
Vol 14 (4) ◽  
pp. 409-412 ◽  
Author(s):  
Suman Das ◽  
Nirmalya Sarkar ◽  
Kaushani Chatterjee ◽  
Bholanath Aich ◽  
Mala Bhattacharya
Keyword(s):  
Portal Hypertension ◽  
Hepatic Failure ◽  
Gastrointestinal Endoscopy ◽  
Medical Science ◽  
Supportive Therapy ◽  
Abdominal Ultrasound ◽  
Upper Gastrointestinal Endoscopy ◽  
Low Grade ◽  
Grade Ii ◽  
Upper Gastrointestinal

A 10 year old boy suffering from prolonged low grade fever, progressive pallor, one episode of haematemesis and melaena, was found to have hepatospenomegaly, features of portal hypertension on abdominal ultrasound, and grade II varices in upper gastrointestinal endoscopy. During hospital stay for diagnostic workup, he developed features of hepatic failure and pancytopenia. Bone marrow aspirate revealed hemophagocytosis and plenty of Leishman-Donovan bodies. The child received Injection Sodium Stibogluconate to treat leishmaniasis and received supportive therapy for hepatic failure and pancytopenia. The child responded well to treatment.Bangladesh Journal of Medical Science Vol.14(4) 2015 p.409-412

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