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Variations of hepatic blood supply

Xiaowen Li, Xinjing Zhang, Qian Lu, Ang Li, Jingyi Lin, Haining Fan, Rui Tang
PURPOSE: During the last decades, it has been established that there are numerous individual anatomical variations of the arterial blood supply in human liver. In the present study, we examined the liver vascularization of an intrahepatic cholangiocarcinoma patient. METHODS: For surgical planning, an enhanced CT scan was performed and a three-dimensional model of liver vascularization constructed. RESULTS: The patient was diagnosed as a Michel's type VII hepatic artery variation...
December 22, 2018: Surgical and Radiologic Anatomy: SRA
Vito De Blasi, Silviu-Tiberiu Makkai-Popa, Luca Arru, Patrick Pessaux, Juan Santiago Azagra
PURPOSE: Our aim is to present a rare case of anatomic variation of the arterial blood supply to the liver because preoperative knowledge of hepatic vascular variations is mandatory in hepatic surgery and liver transplantation. METHODS: We present a case of unusual arterial blood supply to the liver, a right hepatic artery coming from the splenic artery, associated to a classical common hepatic artery and a left hepatic artery from the left gastric artery. Preoperative diagnosis was made using CT-scan and 3D reconstruction...
December 13, 2018: Surgical and Radiologic Anatomy: SRA
Baifeng Qian, Felix Strübing, Zhe Wang, Arianeb Mehrabi, Eduard Ryschich
BACKGROUND: Intraarterial injection into the hepatic artery represents an important route for locoregional administration for the treatment of hepatic tumors. In the present work, we describe microsurgical methodology for injection into the hepatic artery in mice. The technique was recently used for analysis of the phenomenon of endothelial capture in liver tumors. METHODS: Two different models of hepatic tumors in C57BL/6 mice were used. Tumors were induced by intrahepatic cell inoculation...
November 22, 2018: European Surgical Research. Europäische Chirurgische Forschung. Recherches Chirurgicales Européennes
Su Ho Kim, Jung Suk Oh, Ho Jong Chun, Byung Gil Choi, Hae Giu Lee
PURPOSE: To compare the feasibility and safety of mono-port catheter system and dual-port catheter system for advanced hepatocellular carcinoma (HCC) in patients with anatomic hepatic artery variation and portal vein tumor thrombosis. MATERIALS AND METHODS: This retrospective study consisted of 22 patients with infiltrative or multiple HCC with unilateral or bilateral portal vein thrombosis who had hepatic artery variation. A mono-port or dual-port catheter system was determined according to the degree of blood supply to the entire tumor through the common hepatic and variant hepatic arteries...
October 5, 2018: Journal of Vascular and Interventional Radiology: JVIR
Evangelos Tagkalos, Florian Jungmann, Hauke Lang, Stefan Heinrich
BACKGROUND: The anatomic variations of the visceral arteries are not uncommon. The liver arterial blood supply shows 50% variability between humans, with the most common anatomy being one hepatic artery arising from the celiac trunk and one pancreatico-duodenal arcade between the celiac trunk and the superior mesenteric artery. Occlusion of one artery are mostly asymptomatic but may become clinically relevant when surgery of the liver, bile duct or the pancreas is required. If these pathologies are not reversible, an oncologic pancreatic head resection cannot be performed...
May 16, 2018: BMC Surgery
Ira J Goldberg
Cholesterol is not the only lipid that causes heart disease. Triglyceride supplies the heart and skeletal muscles with highly efficient fuel and allows for the storage of excess calories in adipose tissue. Failure to transport, acquire, and use triglyceride leads to energy deficiency and even death. However, overabundance of triglyceride can damage and impair tissues. Circulating lipoprotein-associated triglycerides are lipolyzed by lipoprotein lipase (LpL) and hepatic triglyceride lipase. We inhibited these enzymes and showed that LpL inhibition reduces high-density lipoprotein cholesterol by >50%, and hepatic triglyceride lipase inhibition shifts low-density lipoprotein to larger, more buoyant particles...
April 2018: Arteriosclerosis, Thrombosis, and Vascular Biology
Yiming Liang, Enliang Li, Jiaqi Min, Chengwu Gong, Linquan Wu
INTRODUCTION: Each hepatic artery is functionally essential for providing blood supply to the liver, and so are variant arteries. Variant arteries, including the accessory right hepatic artery (ARHA) and replaced right hepatic artery (RRHA) are commonly described in the literature. However, they usually occur independently. Here, we report an extremely rare case that involved both an ARHA and an RRHA arising from the gastroduodenal artery (GDA) and superior mesenteric artery (SMA), respectively...
September 2017: Medicine (Baltimore)
Huiqiang Liu, Chuanshan Zhang, Xiaoxi Fan, Yingni Duan, Tiqiao Xiao, Guohao Du, Yanan Fu, Haigang Liu, Hao Wen
Propagation-based phase-contrast computed micro-tomography (PPCT) dominates the non-destructive, three-dimensional inner-structure measurement in synchrotron-based biomedical research due to its simple experimental setup. To quantitatively visualize tiny density variations in soft tissues and organs closely related to early pathological morphology, an experimental study of synchrotron-based X-ray PPCT combined with generalized phase and attenuation duality (PAD) phase retrieval was implemented with the hepatic echinococcosis (HE) infection rat model at different stages...
2017: PloS One
Yusuke Sakamoto, Takahisa Fujikawa, Akira Tanaka
Anatomical variations of hepatic arteries may be problematic in pancreaticoduodenectomy (PD). We experienced pancreatic head cancer in a patient with rare variation of hepatic artery and performed PD successfully with the resection of this artery. A 75-year-old woman showed pancreatic head tumor on CT. Preoperative CT detected rare variation of hepatic artery; posterior segmental branch of right hepatic artery (RHA-PB) originating from posterior inferior pancreaticoduodenal artery. The image also demonstrated that there was a junction between RHA-PB and anterior branch of right hepatic artery (RHA-AB)...
December 2017: Surgical Case Reports
George Noussios, Ioannis Dimitriou, Iosif Chatzis, Anastasios Katsourakis
Anatomical variations of the hepatic artery are important in the planning and performance of abdominal surgical procedures. Normal hepatic anatomy occurs in approximately 80% of cases, for the remaining 20% multiple variations have been described. The purpose of this study was to review the existing literature on the hepatic anatomy and to stress out its importance in surgical practice. Two main databases were searched for eligible articles during the period 2000 - 2015, and results concerning more than 19,000 patients were included in the study...
April 2017: Journal of Clinical Medicine Research
Janez Dolenšek
A rare combination of variations in the arterial supply of the liver and gallbladder was encountered in a male cadaver: The simultaneous occurrence of an accessory left hepatic artery and an accessory right hepatic artery from which double cystic arteries arose (one of which was low-lying). This combination has not yet been reported. The accessory left hepatic artery originated from the left gastric artery. The accessory right hepatic artery originated from the superior mesenteric artery. Such arterial variations are caused by differences in embryological development...
February 2, 2017: Folia Morphologica (Warsz)
Mohammed Asif, Leslie S Anewenah, Nisha Reddy, Farrukh A Khan
In ∼60% of cases, hepatic artery anatomy is of the normal variant. However, in 40% of cases, anomalies can exist. Preserving the hepatic blood supply is paramount in hepatobiliary procedures. We report an aberrant right hepatic artery coursing retroportally, with an aberrant left hepatic artery originating directly from the coeliac artery in a patient who underwent an elective pancreaticoduodenectomy (Whipple procedure).
January 31, 2017: BMJ Case Reports
Roger Y Dodd, Edward P Notari, Diane Nelson, Gregory A Foster, David E Krysztof, Zhanna Kaidarova, Lisa Milan-Benson, Debra A Kessler, Beth H Shaz, Farnaz Vahidnia, Brian Custer, Susan L Stramer
BACKGROUND: The frequency of positive test results for transfusion-transmitted infections (TTIs) among blood donors is an important index of safety; thus, appropriate monitoring is critical, particularly when there are changes in policies affecting donor suitability. STUDY DESIGN AND METHODS: Testing algorithms from three large blood systems were reviewed and consensus definitions for a surveillance-positive result for hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV), and human T-cell lymphotropic virus (HTLV) established...
November 2016: Transfusion
André G Baranski, Hwai-Ding Lam, Andries E Braat, Alexander F Schaapherder
AIM: Organ procurement errors account for almost 20% of discarded pancreatic allografts. For this reason, the anatomical significance of the dorsal pancreatic artery (DPA) was reviewed. METHODS: A strategy on dealing with an often overlooked DPA is evaluated. RESULTS: The DPA provides together with the splenic artery the main blood supply to the pancreatic tail. Three different arterial variations have been described. In the rare instances when the DPA arises from the common hepatic artery or the celiac trunk, instead of the splenic origin, the DPA can easily be overlooked by surgeons not familiar with this artery...
October 2016: Clinical Transplantation
Papatya Keles, Ihsan Yuce, Sait Keles, Mecit Kantarci
The aim of this study was to define the different courses and percentages of hepatic artery that were detected during preoperative evaluation of living liver donors by multidetector computed tomographic angiography (MDCTA). We evaluated 150 donors before hepatic transplantation. All of the donors were evaluated by multislice CT scan with 256 detectors. For each patient, arterial, portal and venous phase images were obtained. The hepatic arterial variations were evaluated by the same radiologist according to Michels' classification...
June 2016: Biochemical Genetics
Anas Alakkam, Robert V Hill, Gregory Saggio
The hepatic arteries are subject to a great deal of anatomical variation, potentially complicating hepatobiliary surgical procedures as well as general gastrointestinal procedures that involve foregut and midgut structures. We report a case of a rare variant of the proper hepatic artery discovered during dissection of an 84-year-old male cadaver. In this individual, the common hepatic artery was absent and the proper hepatic artery was replaced directly to the superior mesenteric artery. The gastroduodenal artery and the right inferior phrenic artery took origin from the celiac trunk...
August 2016: Surgical and Radiologic Anatomy: SRA
Ivan Maslarski
Vascular variations are significant for liver transplantations, radiological procedures, laparoscopic method of operation and for the healing of penetrating injuries, including the space close to the hepatic area. These variants are very common in the abdominal region, and their description will be useful. During a routine dissection of a 73 year old female cadaver, we found in the subhepatic region that the blood supply of the liver differed from a normal one. The difference was found in the absence of the right liver branch and the cystic artery, which normally arises from the common hepatic artery...
2015: Clujul Medical (1957)
Adam L Bailey, Michael Lauck, Mariel Mohns, Eric J Peterson, Kerry Beheler, Kevin G Brunner, Kristin Crosno, Andres Mejia, James Mutschler, Matthew Gehrke, Justin Greene, Adam J Ericsen, Andrea Weiler, Gabrielle Lehrer-Brey, Thomas C Friedrich, Samuel D Sibley, Esper G Kallas, Saverio Capuano, Jeffrey Rogers, Tony L Goldberg, Heather A Simmons, David H O'Connor
Human pegivirus (HPgV)-formerly known as GB virus C and hepatitis G virus-is a poorly characterized RNA virus that infects about one-sixth of the global human population and is transmitted frequently in the blood supply. We create an animal model of HPgV infection by infecting macaque monkeys with a new simian pegivirus (SPgV) discovered in wild baboons. Using this model, we provide a high-resolution, longitudinal picture of SPgV viremia where the dose, route, and timing of infection are known. We detail the highly variable acute phase of SPgV infection, showing that the viral load trajectory early in infection is dependent on the infecting dose, whereas the chronic-phase viremic set point is not...
September 16, 2015: Science Translational Medicine
Jianjian Zhang, Ming Zhang, Jianjun Zhang, Qiang Xia
BACKGROUND: Ischemia of the cephalad lobes (70% of liver mass) is a frequently employed mouse hepatic ischemia/reperfusion (I/R) model that does not involve outflow occlusion. This model produces results with relatively large variances. MATERIALS AND METHODS: A novel model of ischemia of the left lateral lobe (35% of liver mass) that involves temporarily occluding the blood supply to the cephalad lobes to expel blood followed by occlusion of both the inflow and outflow of the left lateral lobe, was developed...
2015: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
Emanuele Felli, Giovanni Vennarecci, Roberto Santoro, Nicola Guglielmo, Giuseppe Maria Ettorre
To perform hepatic surgery a precise preoperative and intraoperative study of liver vascular supply is mandatory. Detecting vascular variations may have great importance on surgical strategy and outcome, and details of anatomy do not concern only academical knowledge but become deeply involved in practice. We present a case of unusual blood supply to the liver, the common hepatic artery was directed to the right liver and a right hepatic artery originating from the superior mesenteric artery was directed to the left liver...
April 2016: Surgical and Radiologic Anatomy: SRA
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