scholarly journals Ultrasonographic characteristics and outcome of Type III umbilical-portal-systemic venous shunt

2021 ◽  
Author(s):  
Linlin Zhu ◽  
Haifang Wu ◽  
Xiang Cong ◽  
Zhe Ma ◽  
Guowei Tao
Keyword(s):  
Portal Vein ◽  
Type I ◽  
Partial Closure ◽  
Vein System ◽  
Type Iii ◽  
Type Iiia ◽  
Type Iiib ◽  
Venous Shunt ◽  
Portal Systemic Shunt ◽  
Left Portal Vein

Aims: According to a novel in-utero classification termed “umbilical-portal-systemic venous shunt (UPSVS)” recently proposed for an abnormal umbilical, portal and ductal venous system, the portal-systemic shunt belongs to type III UPSVS. This study was designed to examine the ultrasonographic characteristics and outcome of type III UPSVS.Material and methods: All cases of Type III UPSVS diagnosed at our department from April 2016 to December 2020 were retrospectively studied.Results: Seventeen patients with type III UPSVS including 12 type IIIa and 5 IIIb cases were identified. Sonography showed a shunt between the inferior left portal vein and the left hepatic vein in all type IIIa cases. Three cases of type IIIb had a combination of another shunt (2 with type I and one with type IIIa). Integrate intrahepatic portal vein system was not seen in those 2 cases of type IIIb combined with type I UPSVS, leading to termination of pregnancy (TOP). TOP occurred in 4 patients with type IIIa as requested by the parents. Two cases (type IIIa and type IIIb each) underwent surgical procedure for the closure of the shunt. Spontaneous complete closure in 4 type IIIa cases and partial closure in one type IIIb case occurred during a period of 3-16 months.Conclusions: The majority of patients had type IIIa UPSVS presenting a good outcome. The lack of integrate intrahepatic portal vein system was the main reason for TOP in patients with type IIIb UPSVS. These data suggest the UPSVS classification is a useful tool for a prognosis prediction of type III UPSVS.

Aberrant Right Gastric Vein Directly Communicating with Left Portal Vein System

1990 ◽  
Vol 31 (6) ◽  
pp. 575-577 ◽  
Author(s):  
K. Takayasu ◽  
K. Aoki ◽  
T. Ichikawa ◽  
T. Ohmura ◽  
R. Sekiguchi ◽  
...  
Keyword(s):  
Portal Vein ◽  
Vein System ◽  
Left Portal Vein

The physiology, microcirculation and clinical application of the shunt-restricted arterialized venous flaps for the reconstruction of digital defects

2012 ◽  
Vol 38 (4) ◽  
pp. 352-365 ◽  
Author(s):  
W.L. Lam ◽  
W.N. Lin ◽  
D. Bell ◽  
J. P. Higgins ◽  
Y. T. Lin ◽  
...  
Keyword(s):  
Blood Flow ◽  
Venous Congestion ◽  
Reverse Direction ◽  
Type I ◽  
Type Ii ◽  
Type Iii ◽  
Venous Flaps ◽  
Venous Shunt ◽  
Clinical Series ◽  
Venous Flap

Reconstruction of digital defects using the venous flap offer several advantages but remained unpopular owing to levels of venous congestion rates. We performed animal studies to test the hypothesis that an arterio-venous shunt increases pressure for peripheral flap perfusion and decreases venous congestion. Using an abdominal adipofascial flap model in six male Sprague–Dawley rats, microcirculation was modified as follows: type I – arterial flap; type II – flow-through arterio-venous flap (AVF); and type III – shunt-restricted AVF. In type I flaps, blood flow was observed to be unidirectional in both arterioles and venules. In type I flaps, blood flow was observed to be unidirectional in both arterioles and venules. In type II flaps, blood flow oscillated without a dominant direction and came to a standstill. In type III flaps, blood flowed proximally in a reverse direction whereas distally, flow was similar to type I flaps. In a clinical series, 21 patients received a total of 22 shunt-restricted AVFs. All 22 clinical flaps survived; four flaps suffered epidermolysis but recovered without full thickness loss.

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.

THE RAMIFICATION PATTERN OF PORTAL VEIN IN LEFT LOBE OF HUMAN LIVER STUDIED BY CORROSION CAST METHOD.

2021 ◽  
pp. 23-26
Author(s):  
Ajay Singh Rajput ◽  
Heena Singh ◽  
Gyan Prakash Mishra ◽  
Sangeeta kumari
Keyword(s):  
Portal Vein ◽  
Caudate Lobe ◽  
Left Lobe ◽  
Common Trunk ◽  
Type I ◽  
Medial Branch ◽  
Butyl Butyrate ◽  
Transverse Part ◽  
Left Portal Vein ◽  
Corrosion Cast

INTRODUCTION: The aim of the study was to know the intrahepatic ramication pattern of portal vein in left lobe of liver & its variations. METHODS: 25 human fresh livers were obtained after autopsy and studied by corrosion cast method. Polymeric granules of butyl butyrate were dissolved in acetone and 20% homogenous solution was made. Solution was injected into portal vein and the injected liver was placed in 10 % formal saline for 24 hours at room temperature (20°C) for polymerization of infused butyl butyrate solution. Maceration of liver tissue achieved by whole-organ immersion in 1.8 N KOH solution at 68°C for 24 hrs. Each cast thus obtained was preserved in glycerin and details were studied. RESULTS: The length of the transverse part of Left portal vein (LPV) varies from 1.5 -3.7 cm (2.6 cm) while the length of umbilical part of LPV varied from 0.5 – 1.5 cm. (1.1cm.) and total length of LPV varies from 2.0 cm.-4.8cm.(3.7cm). Ramication of Left Portal Vein was described on the basis of its umbilical part. Two type of pattern observed Type I (Umbilical Part Turned Inferiorly) 60 % cases & Type II (Umbilical Part Turned Superiorly). For segment II - Cranio- lateral (CAL) branch originated from the convexity of the curved portion of the umbilical part 84 % cases while in 16 % it has originated from the transverse part of the LPV. Segment III- Caudo- lateral branch (CRL) originated from the convexity of the curved portion of the umbilical part of LPV in all the cases. Segment IV- From the concavity, Inferio – medial branch ran downward & medially while superior- medial branch ran superiorly & medially to supply the lower & upper part of segment IV respectively. The both superio- medial & inferio-medial branches were present in 13 of 25 cases (52 %), while only superior -medial branches were present in 16 of 25 cases (64 %) cases & only inferio-medial 21 of 25 cases (84%) in cases. In 5 of 25 cases (20 %), a common trunk has originated from the concavity of curved portion of the umbilical part then it divided in to superior-medial & inferio-medial branches to supply the segment IV. The number of portal branches to the caudate lobe (segment I) varied from 1 to 4 branches: most commonly from LPV (52 %), then portal vein (16%) & then right portal vein12% cases. At least one of these branches was always originated from LPV (100%). The number of the branches to supply the caudate lode was 2 as it observed in 56 %, while 3 braches in 16 % cases & 4 branches were present in only 8% of the cases. The ndings of present CONCLUSIONS: study on hepatic vasculature have immense importance in the eld of hepato-biliary surgeries.

scholarly journals Electrophysiological properties of maxillary trigeminal Aβ-afferent neurons of rats

2021 ◽  
Vol 17 ◽  
pp. 174480692110212
Author(s):  
Yuya Okutsu ◽  
Akihiro Yamada ◽  
Sotatsu Tonomura ◽  
Ryan J Vaden ◽  
Jianguo G Gu
Keyword(s):  
Type I ◽  
Type Ii ◽  
Afferent Neurons ◽  
Success Rates ◽  
Fast Kinetics ◽  
Electrophysiological Properties ◽  
Type Iiia ◽  
Type Iiib ◽  
Slow Kinetics ◽  
Conduction Velocities

Aβ-afferents in maxillary or V2 trigeminal ganglion (TG) neurons are somatosensory neurons that may be involved in both non-nociceptive and nociceptive functions in orofacial regions. However, electrophysiological properties of these V2 trigeminal Aβ-afferent neurons have not been well characterized so far. Here, we used rat ex vivo trigeminal nerve preparations and applied patch-clamp recordings to large-sized V2 TG neurons to characterize their electrophysiological properties. All the cells recorded had afferent conduction velocities in the range of Aβ-afferent conduction speeds. However, these V2 trigeminal Aβ-afferent neurons displayed different action potential (AP) properties. APs showed fast kinetics in some cells but slow kinetics with shoulders in repolarization phases in other cells. Based on the derivatives of voltages in AP repolarization with time (dV/dt), we classified V2 trigeminal Aβ-afferent neurons into four types: type I, type II, type IIIa and type IIIb. Type I V2 trigeminal Aβ-afferent neurons had the largest dV/dt of repolarization, the fastest AP conduction velocities, the shortest AP and afterhyperpolarization (AHP) durations, and the highest AP success rates. In contrast, type IIIb V2 trigeminal Aβ-afferent neurons had the smallest dV/dt of AP repolarization, the slowest AP conduction velocities, the longest AP and AHP durations, and the lowest AP success rates. The type IIIb cells also had significantly lower voltage-activated K+ currents. For type II and type IIIa V2 trigeminal Aβ-afferent neurons, AP parameters were in the range between those of type I and type IIIb V2 trigeminal Aβ-afferent neurons. Our electrophysiological classification of V2 trigeminal Aβ-afferent neurons may be useful in future to study their non-nociceptive and nociceptive functions in orofacial regions.

scholarly journals Congenital Intrahepatic Portosystemic Venous Shunt With an Associated Aneurysm: Sonographic Diagnosis

2017 ◽  
Vol 33 (4) ◽  
pp. 304-309
Author(s):  
Hamad Ghazle ◽  
Samantha Bollinger
Keyword(s):  
Hepatic Encephalopathy ◽  
Portal Vein ◽  
Incidental Finding ◽  
Vascular Connection ◽  
Sonographic Diagnosis ◽  
Left Hepatic Vein ◽  
Venous Shunt ◽  
Left Portal Vein ◽  
Portal Veins ◽  
High Degree

Intrahepatic portosystemic venous shunts with associated aneurysms are extremely rare anomalous communications between intrahepatic portal veins and systemic veins through intrahepatic venous channels. Intrahepatic portosystemic venous shunts are usually asymptomatic but can be the cause of hepatic encephalopathy and hypoglycemia, especially when a high degree of shunting exists. The sonographic incidental finding of an aneurysmal vascular connection between the left portal vein and left hepatic vein as diagnosed by sonography is presented and discussed. When evaluating patients with suspected symptoms of hepatobiliary disease, sonographers and radiologists should carefully scan and meticulously assess the liver for signs of abnormal venous communications.

Glenoid Rim Lesions Associated with Recurrent Anterior Dislocation of the Shoulder

1998 ◽  
Vol 26 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Louis U. Bigliani ◽  
Peter M. Newton ◽  
Scott P. Steinmann ◽  
Patrick M. Connor ◽  
Stephen J. McIlveen
Keyword(s):  
Anterior Dislocation ◽  
Type I ◽  
Type Ii ◽  
Recurrent Instability ◽  
Fracture Fragment ◽  
Type Iiia ◽  
Type Iiib ◽  
Anterior Glenoid ◽  
Bony Fragment ◽  
The One

Twenty-five shoulders with recurrent instability and associated anterior glenoid rim lesions were reviewed to 1) develop a classification system of the lesions, 2) evaluate radiographic techniques in detecting the lesions, and 3) analyze the outcome of surgery. Lesions were classified into three types: Type I, a displaced avulsion fracture with attached capsule; Type II, a medially displaced fragment malunited to the glenoid rim; and Type III, erosion of the glenoid rim with less than 25% (Type IIIA) or greater than 25% (Type IIIB) deficiency. Lesions were detected by plain radiographs (19 shoulders) or supplemental CT-arthrograms (12 shoulders) or both. In 16 Type I fractures, both the bony fragment and capsule were reattached to the glenoid rim. In five Type II and three Type IIIA lesions, only the capsule was repaired to the remaining glenoid rim. In the one Type IIIB lesion, a coracoid transfer was performed. At an average followup of 30 months, 22 shoulders (88%) had satisfactory results without recurrent instability, whereas three shoulders (12%) had postoperative redislocations. The majority of recurrent anterior dislocations with associated glenoid rim lesions can be treated by suturing the fracture fragment or capsule or both to the glenoid rim and addressing associated capsular laxity.

Aberrant Right Gastric Vein Directly Communicating with Left Portal Vein System

1990 ◽  
Vol 31 (6) ◽  
pp. 575-577 ◽  
Author(s):  
K. Takayasu ◽  
K. Aoki ◽  
T. Ichikawa ◽  
T. Ohmura ◽  
R. Sekiguchi ◽  
...  
Keyword(s):  
Portal Vein ◽  
Vein System ◽  
Left Portal Vein

Aberrant Right Gastric Vein Directly Communicating with Left Portal Vein System

1990 ◽  
Vol 31 (6) ◽  
pp. 575-577
Author(s):  
K. Takayasu ◽  
K. Aoki ◽  
T. Ichikawa ◽  
T. Ohmura ◽  
R. Sekiguchi ◽  
...  
Keyword(s):  
Portal Vein ◽  
Vein System ◽  
Left Portal Vein
Sign in / Sign up

Export Citation Format

Share Document