scholarly journals Features of morphometric parameters of vessels in the human portal venous system identified by multislice computed tomography

2022 ◽  
Vol 20 (4) ◽  
pp. 49-55
Author(s):  
A. N. Russkikh ◽  
A. D. Shabokha ◽  
N. V. Tyumentsev ◽  
S. N. Derevtsova
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Multislice Computed Tomography ◽  
Morphological Characteristics ◽  
Frontal Plane ◽  
Morphometric Parameters ◽  
Venous System ◽  
Portal Venous System ◽  
Vein Formation ◽  
Branching Patterns

The aim of this study was to identify the morphometric features of the human portal venous system by means of multislice computed tomography (MSCT).Materials and methods. A contrast X-ray study of the portal vein was carried out in 53 men who were treated in the surgical departments of the Krasnoyarsk Regional Hospital No. 1. The average age of the patients was 54.9 ± 1.7 years (36–71 years). Measurements were performed on 3D models of the vascular bed in the portal venous system (GE Advantage Workstation and Siemens singo.via workstations). Branching patterns, length, diameter, angle of the portal vein formation relative to the midline of the human body, and angles of formation of the vessels forming the portal vein in the frontal plane were evaluated.Results. Variations in the morphometric parameters of the intrahepatic vessels of the portal vein are obvious, although the branching patterns are not diverse and are reduced to one type – the magistral pattern (according to V.N. Shevkunenko). The veins that form the portal vein are represented by three systems, each of which has a stem and tributaries that differ in branching patterns and other morphological characteristics.Conclusion. The findings of the study made it possible to supplement the scientific materials regarding branching patterns and morphological characteristics of the portal vein and its tributaries as well as to use the morphometric characteristics of the superior and inferior mesenteric and splenic veins to resolve the issues of surgical intervention on the abdominal organs. 

scholarly journals Anomalies of the Portal Venous System in Dogs and Cats as Seen on Multidetector-Row Computed Tomography: An Overview and Systematization Proposal

2019 ◽  
Vol 6 (1) ◽  
pp. 10 ◽  
Author(s):  
Giovanna Bertolini
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Venous System ◽  
Low Flow ◽  
Portal System ◽  
Multidetector Row Computed Tomography ◽  
Portal Venous System ◽  
Multidetector Row ◽  
Vein Thrombosis ◽  
Portosystemic Shunts

This article offers an overview of congenital and acquired vascular anomalies involving the portal venous system in dogs and cats, as determined by multidetector-row computed tomography angiography. Congenital absence of the portal vein, portal vein hypoplasia, portal vein thrombosis and portal collaterals are described. Portal collaterals are further discussed as high- and low-flow connections and categorized in hepatic arterioportal malformation, arteriovenous fistula, end-to-side and side-to-side congenital portosystemic shunts, acquired portosystemic shunts, cavoportal and porto-portal collaterals. Knowledge of different portal system anomalies helps understand the underlying physiopathological mechanism and is essential for surgical and interventional approaches.

scholarly journals No Association of Homocysteine, Anticardiolipin Antibody, and Anti-β2 Glycoprotein I Antibody With Portal Venous System Thrombosis in Liver Cirrhosis

2021 ◽  
Vol 27 ◽  
pp. 107602962110109
Author(s):  
Le Wang ◽  
Xiaozhong Guo ◽  
Xiangbo Xu ◽  
Shixue Xu ◽  
Juqiang Han ◽  
...  
Keyword(s):  
Liver Cirrhosis ◽  
Portal Vein ◽  
Anticardiolipin Antibody ◽  
Venous System ◽  
Common Complication ◽  
Portal Venous System ◽  
Main Portal Vein ◽  
Glycoprotein I ◽  
Cirrhotic Patients ◽  
Clinically Significant

Portal venous system thrombosis (PVST), a common complication of liver cirrhosis, is closely associated with thrombophilia. To explore the association of homocysteine (Hcy), anticardiolipin antibody (aCL), and anti-β2 glycoprotein I antibody (aβ2GPI), which are possible thrombophilic factors, with PVST in liver cirrhosis. Overall, 654 non-malignant patients (219 with and 435 without liver cirrhosis) admitted between January 2016 and June 2020 were retrospectively evaluated. Presence of PVST, degree of main portal vein (MPV) thrombosis, and clinically significant PVST were identified. Hcy level, hyperhomocysteinemia (HHcy), aCL positivity, and aβ2GPI positivity were compared according to the presence of liver cirrhosis and PVST. Positive aβ2GPI was significantly more frequent in patients with liver cirrhosis than those without, but Hcy level and proportions of HHcy and positive aCL were not significantly different between them. PVST could be evaluated in 136 cirrhotic patients. Hcy level [10.57 μmol/L (2.71-56.82) versus 9.97 μmol/L (2.05-53.44); P = 0.796] and proportions of HHcy [4/44 (9.1%) versus 13/81 (16.0%); P = 0.413] and positive aCL [1/23 (4.3%) versus 10/52 (19.2%); P = 0.185] and aβ2GPI [9/23 (39.1%) versus 21/52 (40.4%); P = 0.919] were not significantly different between cirrhotic patients with and without PVST. There was still no significant association of Hcy level, HHcy, aCL, or aβ2GPI with PVST based on Child-Pugh classification, MPV thrombosis >50%, and clinically significant PVST. Hcy, aCL, and aβ2GPI may not be associated with PVST in liver cirrhosis, suggesting that routine screening for Hcy, aCL, and aβ2GPI should be unnecessary in such patients.

scholarly journals The ABCD of portal vein thrombosis: a systematic approach

2020 ◽  
Vol 53 (6) ◽  
pp. 424-429
Author(s):  
Alexandre Makoto Minoda ◽  
Raissa Brito Fernandes Cadete ◽  
Sara Reis Teixeira ◽  
Valdair Francisco Muglia ◽  
Jorge Elias Junior ◽  
...  
Keyword(s):  
Portal Vein ◽  
Portal Vein Thrombosis ◽  
Systematic Approach ◽  
Careful Analysis ◽  
Venous System ◽  
Portal Venous System ◽  
Vein Thrombosis ◽  
Case Files ◽  
Collateral Vessels ◽  
And Diffusion

Abstract Portal vein thrombosis refers to complete or partial obstruction of the portal venous system, in the intrahepatic or extrahepatic venous tract or even in the splenic or superior mesenteric veins. This common and potentially fatal condition can develop in various clinical contexts, especially those of liver cirrhosis, hepatocellular carcinoma, and other solid tumors. Certain characteristics, such as the time since the onset of the thrombus (acute or chronic), its biology (hematic or tumoral), the presence of collateral vessels, and the magnetic resonance imaging aspects, are important components of a thorough, careful analysis, as well as informing decisions regarding the appropriate therapeutic strategy. Here, we present a brief review of the anatomy of the portal venous system and a systematic approach to analyzing the condition, using a mnemonic (ABCD, for age, biology, collaterals, and diffusion). We discuss the various imaging methods and illustrate our discussion with images selected from the case files archived at our facility.

scholarly journals Sonography and multislice contrast tomography in the diagnosis of chronic venous insufficiency complicated by trophic ulcers

2021 ◽  
Vol 11 (7) ◽  
pp. 316-323
Author(s):  
O. Kolomiets
Keyword(s):  
Computed Tomography ◽  
Chronic Venous Insufficiency ◽  
Venous Insufficiency ◽  
Multislice Computed Tomography ◽  
Venous Blood ◽  
Lower Extremities ◽  
Venous System ◽  
Venous Blood Flow ◽  
Planning Stage ◽  
X Ray

Sonography has become the gold standard in the diagnosis of pathological changes in venous insufficiency, however, studies by other scientists indicate the need for a comprehensive study using phlebographic methods. The aim of the work was to compare the results of sonography and multislice tomography in the diagnosis of chronic venous insufficiency complicated by trophic ulcers. Materials and methods. The results of treatment of 97 patients with chronic venous insufficiency in stage C6 and C6r were evaluated. Ultrasound angioscanning of the venous system of the lower extremities at the planning stage of surgical treatment and in the postoperative period (early and after a year of observation) was performed on a digital device of expert class for cardiovascular studies (Toshiba Aplio 500) with 5-10 MHz sensor and appropriate standard software package examination of the venous system of the lower extremities. Multislice computed tomography was performed using X-ray computed tomography (Philips Brilliance 64). The study was performed using X-ray contrast iodine-containing medium (Omnipack-350) at the rate of 1 ml of the drug per kilogram of patient weight. Research results and their discussion. the sonographic study found that the causes of trophic ulcers were impaired venous blood flow in the veins of the lower extremities due to severe varicose transformation and decompensated reflux, and changes in the deep venous system due to thrombosis of the deep veins. Greater sensitivity and specificity of multislice computed tomography in the diagnosis of postthrombotic stenoses and obliterations were found compared with sonographic examination. This method is valuable in the study of the anatomy of the venous system, but does not allow to assess the parameters of hemodynamics (duration and degree of reflux, but only its presence).

scholarly journals Variability of the level of portal vein formation registered by computed tomography

2021 ◽  
Vol 6 (1) ◽  
pp. 4-8
Author(s):  
Aleksandr V. Kolsanov ◽  
Maksim N. Myakotnykh ◽  
Anatolii V. Tolstov ◽  
Aleksei A. Mironov
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Three Dimensional ◽  
Spinal Column ◽  
Lumbar Vertebra ◽  
Thoracic Vertebra ◽  
Vein Formation ◽  
Dimensional Models ◽  
Three Dimensional Models ◽  
The Right

Objectives to study the variability of the level of portal vein formation in relation to the spinal column according to computed tomography data. Material and methods. The study evaluated the results of 100 multispiral (multislice) computed tomography (MSCT) scans of the abdominal organs done in the period of 2018-2019 and collected in the archive of the Clinics of the Samara State Medical University. For mathematical modeling and the creation of three-dimensional models of the vascular bed, we used the plug-ins in the software "Luch" and "Avtoplan" that made it possible to obtain the three-dimensional models based on MSCT data. The level of portal vein formation relative to the spinal column was studied. Results. The level of portal portal vein formation relative to the spinal column varied from the lower edge of the twelfth thoracic vertebra (ThXII) to the upper edge of the second lumbar vertebra (LII). Most often, the portal vein was formed at the level of the middle of the first thoracic vertebra body (LI). This level of portal vein formation was detected in 23% of cases. In 64% of cases, the portal vein was formed at the level of the right edge of the vertebra.

Prepancreatic postduodenal portal vein: a new hypothesis for the development of the portal venous system

2010 ◽  
Vol 28 (2) ◽  
pp. 157-161 ◽  
Author(s):  
Nobuo Tomizawa ◽  
Hiroyuki Akai ◽  
Masaaki Akahane ◽  
Kenji Ino ◽  
Shigeru Kiryu ◽  
...  
Keyword(s):  
Portal Vein ◽  
Venous System ◽  
Portal Venous System ◽  
New Hypothesis

Aberrant Left Gastric Vein Directly Draining into Left Portal Venous System

1992 ◽  
Vol 33 (5) ◽  
pp. 462-463 ◽  
Author(s):  
H. Tajima ◽  
R. Murakami ◽  
T. Kumazaki
Keyword(s):  
Gastric Cancer ◽  
Liver Cirrhosis ◽  
Early Gastric Cancer ◽  
Portal Vein ◽  
Venous System ◽  
Portal Venous System ◽  
Left Gastric Vein ◽  
Direct Communication ◽  
Vein System ◽  
Left Portal Vein

A 66-year-old man with early gastric cancer and liver cirrhosis was diagnosed by preoperative angiography as having an aberrant left gastric vein communicating directly with the left lateral portal vein system. This communication was confirmed during operation for the gastric cancer. Our report is the first of an aberrant left gastric vein showing direct communication with the left portal vein system.

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