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

2019 ◽  
Author(s):  
Giovanna Bertolini
Keyword(s):  
Portal Vein ◽  
Venous System ◽  
Low Flow ◽  
Portal System ◽  
Multidetector Row Computed Tomography ◽  
Portal Venous System ◽  
Multidetector Row Ct ◽  
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 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 Three-Dimensional Visualization of the Coronary Venous System Using Multidetector Row Computed Tomography

2005 ◽  
Vol 69 (2) ◽  
pp. 165-170 ◽  
Author(s):  
Hiroshi Tada ◽  
Kenji Kurosaki ◽  
Shigeto Naito ◽  
Keiko Koyama ◽  
Kazuhiro Itoi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Three Dimensional ◽  
Venous System ◽  
Multidetector Row Computed Tomography ◽  
Multidetector Row ◽  
Coronary Venous System

Value of Multidetector-row Computed Tomography in Diagnosis of Portal Vein Invasion by Perihilar Cholangiocarcinoma

2008 ◽  
Vol 32 (7) ◽  
pp. 1478-1484 ◽  
Author(s):  
Teiichi Sugiura ◽  
Hideki Nishio ◽  
Masato Nagino ◽  
Yoshiki Senda ◽  
Tomoki Ebata ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Portal Vein ◽  
Perihilar Cholangiocarcinoma ◽  
Multidetector Row Computed Tomography ◽  
Portal Vein Invasion ◽  
Multidetector Row

scholarly journals Portal Vein Thrombosis: Diagnosis and Endovascular Management

2021 ◽  
Author(s):  
Connie Ju ◽  
Xin Li ◽  
Sameer Gadani ◽  
Baljendra Kapoor ◽  
Sasan Partovi
Keyword(s):  
Portal Vein ◽  
Portal Vein Thrombosis ◽  
Underlying Disease ◽  
Venous System ◽  
Portal Venous System ◽  
Endovascular Management ◽  
Vein Thrombosis ◽  
Endovascular Interventions ◽  
Clinically Significant ◽  
Optimal Approach

Background Portal vein thrombosis (PVT) is a rare but severe entity that can cause clinically significant sequela such as worsening portal hypertension or mesenteric ischemia. Those cases refractory to medical management may be referred for endovascular intervention. Several technical considerations have been described in the literature, but a cohesive comparison of these multiple techniques is lacking. Methods The purpose of this article is to review the diagnosis and endovascular management of PVT, including areas in which further research is warranted. Results Cases of PVT can be readily diagnosed using ultrasound, computed tomography, or magnetic resonance imaging. Treatment often begins with systemic anticoagulation and endovascular interventions may be used in selected cases. Determining the optimal approach to accessing the portal venous system depends on the underlying disease and chronicity of the thrombus and the degree of occlusion. Once access to the portal venous system is established, catheter-directed therapy may be performed to achieve recanalization. Conclusion Despite the heterogeneity in patient presentation, cases of PVT can be readily diagnosed across several imaging modalities. Strategizing interventional approaches involves evaluation of the underlying disease and the chronicity of the thrombus. Key Points:  Citation Format

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. 

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