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Liver vascular anatomy

Non-invasive detailed demonstration of the hepatic vascular anatomy is possible with advanced multi-detector computed tomography (CT) and magnetic resonance (MR) imaging. The objective of this review is to provide a brief overview of clinically relevant hepatic vascular anatomy and important variants Presurgical planning of vascular anastomosis and variations is a key component for a variety of liver sur- geries, including transplantation, tumor resection, and laparoscopic hepatobiliary surgery (1). Detailed knowledge of the hepatic angioarchi- tecture is thus considered a prereq - uisite for successful, uncomplicated liver surgeries (1-3) The liver is a peritoneal organ positioned in the right upper quadrant of the abdomen. It is the largest visceral structure in the abdominal cavity, and the largest gland in the human body. An accessory digestion gland, the liver performs a wide range of functions, such as synthesis of bile, glycogen storage and clotting factor production

Liver vascular anatomy: a refresher — Mayo Clini

  1. The classic biliary anatomy appears in about 58% of the population and consists of the right hepatic duct and left hepatic duct draining the right and left lobes of the liver, respectively (, Fig 6)
  2. Liver vascular anatomy. A vascular ultrasound of the liver is performed to help evaluate the liver and its network of blood vessels within the liver and entering and exiting the liver. Including synthesis of bile glycogen storage and clotting factor production
  3. The liver has a dual blood supply. The portal vein (which is rich in nutrients and relatively high in oxygen) provides two thirds of blood flow to the liver. The hepatic artery (which is oxygen-rich) supplies the rest. The hepatic veins drain the liver into the inferior vena cava

Celiac artery and arterial branches to the liver Conventional anatomy of the celiac artery (Fig. 1) The supramesocolic arterial irrigation arises from the celiac artery, running from the anterior side of the aorta at the level of the 12th thoracic vertebra (indication for catheterization) The Couinaud classification of liver anatomy divides the liver into eight functionally indepedent segments. Each segment has its own vascular inflow, outflow and biliary drainage. In the centre of each segment there is a branch of the portal vein, hepatic artery and bile duct

The liver is unique among organs in that it receives blood via two distinct circulatory routes: systemic circulation and hepatic portal circulation. Each of these routes provides blood of differing compositions that allow the liver to perform its unique and vital digestive and metabolic functions Knowledge of vascular anatomy of the liver is important, because variant hepatic vascular anatomy can result in modifications or alternative approaches during procedures and surgeries. Conventional catheter angiography is the gold standard for evaluation of vascular anatomy, particularly for hepatic arteries, but is invasive A vascular ultrasound of the liver is performed to help evaluate the liver and its network of blood vessels (within the liver and entering and exiting the liver). Using vascular ultrasound can help physicians diagnose and review the outcome of treatments for various liver-related problems and diseases Start studying Liver Vascular Anatomy. Learn vocabulary, terms, and more with flashcards, games, and other study tools

  1. arterial anatomy are common, with the classic anatomy being found in only 58% and 55% of the population, respectively. Variant hepatic arterial anatomy not only dictates the surgical technique but may also predict the risk of hepatic arterial complications and of subsequent biliary strictures and liver abscesses. Unanticipated anatomic vari
  2. File:Liver vascular anatomy.svg. Size of this PNG preview of this SVG file: 512 × 440 pixels. Other resolutions: 279 × 240 pixels | 559 × 480 pixels | 698 × 600 pixels | 894 × 768 pixels | 1,192 × 1,024 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below
  3. This paper is a review of the anatomy of the bile ducts and the vascular anatomy of the liver. This anatomy is subject of numerous variations which can be explained by the embryology of the liver and its vessels
  4. Variant hepatic arterial anatomy. Variation in hepatic arterial anatomy is seen in 40-45% of people. Classic branching of the common hepatic artery from the celiac artery, and the proper hepatic artery into right and left hepatic arteries to supply the entire liver, is seen in 55-60% of the population. Classification
  5. al cavity and is in close approximation with the diaphragm, stomach and the gallbladder. It is largely covered by the costal cartilages
  6. The liver is an accessory digestive organ that produces bile, an alkaline fluid containing cholesterol and bile acids, which helps the breakdown of fat. The gallbladder, a small pouch that sits just under the liver, stores bile produced by the liver which is afterwards moved to the small intestine to complete digestion
  7. ant blood supply to the liver parenchyma and allows the liver to perform its gut related functions such as.

The Liver - Lobes - Ligaments - Vasculature - TeachMeAnatom

Video: Vascular and Biliary Variants in the Liver: Implications

Describe normal anatomy of the liver, including vascular supply and relational landmarks • List the functions of the liver • Describe the liver function tests and their relevance to hepatic disease • Discuss the sonographic evaluation of the liver in the sagittal, transverse, and decubitus planes Introduction The intra-hepatic vascular anatomy in rodents, its variations and corresponding supplying and draining territories in respect to the lobar structure of the liver have not been described. We performed a detailed anatomical imaging study in rats and mice to allow for further refinement of experimental surgical approaches Taken from our Abdominal Ultrasound Essentials course, this short video covering liver anatomy packs a powerful punch. Dr Nikolaus Mayr will take you on a fa.. A liver hemangioma (he-man-jee-O-muh) is a noncancerous (benign) mass in the liver. A liver hemangioma is made up of a tangle of blood vessels. Other terms for a liver hemangioma are hepatic hemangioma and cavernous hemangioma. Most cases of liver hemangiomas are discovered during a test or procedure for some other condition

Applied Anatomy in Liver Resection and Liver Transplantation English | 2021 | ISBN: 9811607990 | 393 Pages | PDF EPUB | 161 MB This book has 20 chapters which cover a full range of knowledge about liver anatomy before one embarks on carrying out a liver operation on a patient. The knowledge range.. Vascular anatomy The right gastric vein (sometimes referred to as the pyloric vein) is small and is identified in approximately 80%; it terminates in the anterior aspect of the portal vein in 75% of the cadavers. 42 Petren 43 indicated that the aberrant right gastric vein (also referred to as the suprapyloric vein) directly drained into the. The hepatic vascular system is dynamic, meaning that it has considerable ability to both store and release blood - it functions as a reservoir within the general circulation. In the normal situation, 10-15% of the total blood volume is in the liver, with roughly 60% of that in the sinusoids The vascular anatomy of the ligaments of the liver: gross anatomy, imaging and clinical applications 1KENJI IBUKURO MD, 1HOZUMI FUKUDA MD, 1KIMIKO TOBE , 2KEIICHI AKITA MD and 3TAKAYA TAKEGUCHI 1Department of Diagnostic Radiology, Mitsui Memorial Hospital, Tokyo, Japan 2Department of Clinical Anatomy, Tokyo Medical & Dental University, Tokyo, Japa

Liver Vascular Anatomy - Anatomy Diagram Boo

  1. al cavity, beneath the diaphragm, and on top of the stomach, right kidney, and intestines. Shaped like a cone, the liver is a dark reddish-brown organ that weighs about 3 pounds. There are 2 distinct sources that supply blood to the liver, including the.
  2. supplies correlate between CT and angiography. Finally, we show how the vascular anatomy changes with the respiratory cycle. Historical Aspects of Liver Segmentation that biliary duct branching follows a segmental pattern (10). Healey and Schroy divided the liver into five segments by using secondary biliary duct and hepatic artery branching (11)
  3. Living donor liver transplantation (LDLT) is a preferable treatment for adults with end-stage liver disease due to the limited number of available cadaveric donors. 1 Fundamental to the application of this technique is an understanding of hepatic vascular anatomy. 2 Michels first reported 10 basic types of hepatic arterial supply. 3 Since then, common and rare hepatic artery variants have been.
  4. The Liver. The human liver is both the largest internal organ (the skin being the largest organ overall) and the largest gland in the human body. It is a soft, pinkish-brown, triangular organ normally weighing 1.44-1.66 kg (3.2-3.7 lb). The liver has a wide range of functions including detoxification, protein synthesis, and the production.
  5. al cavity just inferior to the diaphragm. Most of the liver's mass is located on the right side of the body where it descends inferiorly toward the right kidney. The liver is made of very soft, pinkish-brown tissues encapsulated by a connective tissue.
  6. Liver vasculature and segmentation in CT scan. 2017-12-31 ~ Brian Wong Yung Kong. Background. - In the past, morphological anatomy of liver is described based on its attaching ligament. - Since 20th century, functional anatomy of liver is described based on vascular supply, this has good surgical applications and in monitoring of liver lesions
  7. Anatomy of the Liver The liver is reddish-brown and shaped approximately like a cone or a wedge, with the small end above the spleen and stomach and the large end above the small intestine. The entire organ is located below the lungs in the right upper abdomen

Overview of Vascular Disorders of the Liver - Hepatic and

1. Eur J Radiol. 2010 Nov;76(2):e1-5. doi: 10.1016/j.ejrad.2009.07.001. Epub 2009 Aug 7. Detection of biliary and vascular anatomy in living liver donors: value of gadobenate dimeglumine enhanced MR and MDCT angiography Anatomy. The portal vein supplies 75% to 80% of the afferent blood volume and 50% of the oxygen to the liver, with the remainder supplied by the hepatic artery. 91 Tributaries of the portal vein, from caudal to cranial, include the mesenteric vessels, which drain the small intestines and form the cranial mesenteric vein; caudal mesenteric vein, which drains the colon and proximal rectum. This study aims at understanding the vascularization of the human liver to determine the correct way to divide it into divisions (sectors) and segments, for which we dissected 250 livers using the acrylic resin injection method. The result s showed the role of the Porta hepatis in the hepatic vascular distribution, the existence of seven vascular pedicles for seven portal segments, and. in liver fibrosis and cirrhosis and in idiopathic portal hypertension. Lym-phatic vessels are abundant in the immediate vicinity of the hepatocellu-lar carcinoma (HCC) and liver metastasis. HCCs expressing vascular en-dothelial growth factor-C are more liable to metastasize, indicating tha

Anatomy of liver arteries for interventional radiology

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.: You are free: to share - to copy, distribute and transmit the work; to remix - to adapt the work; Under the following conditions: attribution - You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but. The liver has the general shape of a prism or wedge, with its base to the right and its apex to the left (see the image below). It is pinkish brown in color, with a soft consistency, and is highly vascular and easily friable. Confusion surrounds the nomenclature of liver anatomy A liver hemangioma (he-man-jee-O-muh) is a noncancerous (benign) mass in the liver. A liver hemangioma is made up of a tangle of blood vessels. Other terms for a liver hemangioma are hepatic hemangioma and cavernous hemangioma. Most cases of liver hemangiomas are discovered during a test or procedure for some other condition

ultrasound [Nicks Radiology Wiki]

anatomy is essential for locating hepatic masses. Delineation of the vascular anatomy defining the lo- bar and segmental demarcation lines has been as- sessed with US, CT and MR imaging (3-6, 9, 10, 12). Our study evaluated the ability of noninvasive imaging methods to localize focal liver pathology to the hepatic segments. Material and Method The liver lobes, their number and nomenclature, as well as their biliary and vascular system are still the subject of investigation, in several species of the experimental animals, such as the rat [3, 5, 19, 24], rabbit [12, 13, 16, 18, 19], guinea pig [19, 20, 21], nutria [12] Ultrasound Of Liver Segments Anatomy. Presentation1 Abdominal Ultrasound Anatomy. Ultrasound Doppler Ultrasound In Liver Transplantation. Startradiology. The Radiology Assistant Normal Values Ultrasound. Department Of Diagnostic Radiology And Organ Imaging. Long Liver Abd Ultrasound 100 Mod 2 Ultrasound Introduction. The internal vascular and biliary tract of the liver are intricate, and the asymmetrical and complex configuration of this anatomy make it difficult to understand. The difficulty of visualising the internal structures of the liver is compounded further because interpretation usually has to be made from two-dimensional (2D. Hepatic vascular anatomy is important to the surgeons who are evaluating donors and recipients in the living adult donor liver transplantation programs. In the past, conventional catheter angiography was used to assess vascular anatomy; however, MDCT angiography is replacing conventional angiography in the evaluation of vascular anatomy [ 10 ]

Internal Features of Liver (Vascular) The hepatic artery is a branch of the celiac artery and ascends along the hepatoduodenal ligament and eventually divides into the right and left main branches. The right hepatic artery is usually seen behind the common hepatic duct after giving rise to the cystic artery, and it eventually divides into the. The human liver: Vascular anatomy to determine its segments and divisions. Int. J. Morphol., 38(1):226-229, 2020. 229 main portal fissure) should not be used to delimit hepatic divisions for two reasons: the first reason is that a vein could be absent, and the second reason is that the left hepati The liver is an organ only found in vertebrates which detoxifies various metabolites, synthesizes proteins and produces biochemicals necessary for digestion and growth. [2] [3] [4] In humans, it is located in the right upper quadrant of th Liver Transpl 2003; 9: 6-14. 13. Kruskal JB, Raptopaulos V. How I do it: preoperative CT scanning for adult living right lobe liver transplantation. Eur Radiol 2002; 12: 1423-31. 14. Guiney MJ, Kruskal JB, Sosna J, et al. Multi-detector row CT of relevant vascular anatomy of the surgical plane in split-liver trans- plantation. Radiology 2003. • Couinaud classification - divides the liver into eight functionally indepedent segments. - Each segment has its own vascular inflow, outflow and biliary drainage. - In the centre of each segment there is a branch of the portal vein, and bile duct. - In the periphery of each segment there is vascular outflow through the hepatic veins. 4

Unusual Origin of an Accessory Left Hepatic Artery

The Radiology Assistant : Segmental Anatom

A, Normal gross anatomy of a liver; B, histological slide; B', histological view. The liver can be considered in terms of blood supply hepatocytes, Kupffer cells and biliary passages. The liver receives its blood supply from the portal vein and hepatic artery, the former providing about 75% of the total 1500 ml/min flow Anatomic variations involving the vascular and biliary anatomy of the liver are common. As many as 24 to 57% of the population have biliary variants, 1-5 and between 31 and 49% have hepatic arterial variants. 4, 6-8 Portal vein variants are reportedly less common, affecting 16 to 26% of the population. 4, 9, 10 Knowledge of anatomic variants is valuable in preoperative planning, particularly. Living related donor liver transplantation has emerged as an alternative to cadaveric liver transplantation because of the shortage of available cadaveric livers for transplantation.Preoperative assessment of potential liver donors is required to exclude focal lesions, ensure adequate liver volume, evaluate for fatty infiltration of the liver, and determine hepatic vascular and biliary anatomy

Vascular Liver Disease. Budd-Chiari syndrome is thrombosis (clotting) of the hepatic veins which leads to poor blood flow though the liver. Hepatocellular Carcinoma. Hepatocellular carcinoma (HCC) is a primary cancer of the liver, meaning that it originates from abnormal liver cells. HCC occurs only rarely in a normal, non-cirrhotic liver Materials and Methods: Rat liver plastinates and vascular corrosion casts were used for visualization of the rat lobar and vascular anatomy. As a result of this detailed anatomical study, the new surgical technique consisting of a delicate stepwise piercing of the liver parenchyma at the bases of median and right superior lobes was introduced Transjugular Intrahepatic Portosystemic Shunt (TIPS) is a shunt or a bypass use to connect two veins within the liver with the use of x-ray by interventional radiology. This tract is what we call a Transjugular Intrahepatic Portosytemic Shunt or simply abbreviated as TIPS. See the yellow tract on the picture to your left. When is TIP

Starry night: hepatitis on ultrasound | Image

Blood Supply to the Liver and Gallbladde

Liver - vascular anatomy Double blood supply from hepatic artery (30%) and portal vein (70%) Arterial supply by common hepatic artery branch of coeliac artery. Gives off right gastric and gastroduodenal arteries before reaching the liver in the free edge of the lesser omentum. Divides into left and right hepatic arteries before entering the. The Couinaud classification of liver anatomy divides the liver into eight functionally indepedent segments. Each segment has its own vascular inflow, outflow and biliary drainage. In the centre of each segment there is a branch of the portal vein, hepatic artery and bile duct. In the periphery of each segment there is vascular outflow through. It works by estimating the time of contrast travel from the site of injection to the vascular structure of liver. This technique is highly dependent upon the site of contrast injection, age of the patient, cardiac output, and vascular anatomy. Generally the contrast takes about 18-25 seconds to travel from the antecubital vein to the abdominal. Endoscopic ultrasound (EUS) can demonstrate the detailed anatomy of the liver from the transgastric and transduodenal routes. Most of the liver segments can be imaged with EUS, except the right posterior segments. The intrahepatic vascular landmarks include the major hepatic veins, portal vein radicals, hepatic arterial branches, and the. Changes in hepatic volume, hepatic perfusion, and vascular anatomy were measured. Portal scintigraphy was performed in 8 dogs preoperatively and 22 dogs postoperatively. Results. Dogs with smaller preoperative liver volumes had greater increases in liver volume postoperatively compared with those with larger preoperative liver volumes

For some authors, the use of a vascular anatomy of canine hepatic venous system based on the analogies between Couinaud's segmentation of the human liver and the vascular anatomy of canine liver, could be less confounding and, therefore, more useful for the surgical (and also radiological) approach to this organ Vascular Ultrasound Ultrasound Sonography Radiology Imaging Medical Imaging Ultrasound School Ultrasound Physics Medical Radiography Liver Anatomy Ultrasound Technician Recognition of variations in abdominal arteries that supply the liver, pancreas, gallbladder, and spleen can help in reducing the blood loss during surgical procedures involving these areas. [6] [7] The vascular anatomy of the celiac trunk also plays a crucial role in arterial anastomoses during surgery Liver Failure: Treatment Portosystemic Shunts A, Portacaval shunt. The portal vein is anastomosed to the inferior vena cava, diverting blood from the portal vein to the systemic circulation. B, Distal splenorenal shunt. The splenic vein is anastomosed to the renal vein. The portal venous flow remains intact, and esophageal varices are selectively decompressed

Liver vascular anatomy: a refresher SpringerLin

The vascular anatomy of the ligaments of the liver: gross anatomy, imaging and clinical applications. Kenji Ibukuro 1 Department of Diagnostic Radiology, Mitsui Memorial Hospital, Tokyo, Japan Liver structure and function in health and disease are best studied in mammals and humans whereby many studies were devoted to hepatic circulation (Geerts, Timmermans, & Reynaert, 2008; McCuskey, 2000, 2008; Sasse, Spornitz, & Maly, 1992). Presently, hepatic micro-vascular anatomy is convincingly illustrated by vascular The clinical relevance to understand the exact hepatic vascular anatomy is illustrated by the disturbed vascular architecture in case of liver pathology, such as cirrhosis with fibrosis (overproduction of extracellular matrix), regenerative nodules, increased vascular resistance, neo‐angiogenesis, and vascular remodeling leading to portal. Imaging of Intrapulmonary Vascular Dilations . Treatment . The liver has a unique, dual blood supply in which 25% of the flow comes from the hepatic artery and 75% through the portal vein ( Fig. 90-1 ). There is an inverse relationship between these two blood supplies

Vascular Ultrasound of the Liver - Cleveland Clini

LIVER Procedures involving the liver, such as hepatectomies, segmentectomies, and liver transplants The microvascular anatomy of the non-lobulated liver of adult Xenopus laevis was studied by scanning electron microscopy of vascular corrosion casts. Hepatic portal veins and hepatic arteries entered hepatic lobes at the hiluses, hepatic veins left at these sites Gross anatomy. By convention the biliary tree is divided into intra- and extra-hepatic bile ducts 1. There is significant variation in the biliary tree with the classical description below thought to be present in ~60% of the population 2. Intrahepatic bile ducts Bile canaliculi unite to form segmental bile ducts which drain each liver segment Liver Blood Flow Overview. The hepatic circulation is the most complicated of any organ system. This chapter outlines the physiologic control of the liver's blood supply, describes the techniques used for its measurement in both human and animal models, and explores its function in various clinical situations Blood supply and innervation of the liver Author: Alexandra Sieroslawska MD • Reviewer: Dimitrios Mytilinaios MD, PhD Last reviewed: June 23, 2021 Reading time: 9 minutes The liver is the largest visceral tissue mass in the human body and is located in the upper right quadrant of the abdomen.It is a multifunctional accessory to the gastrointestinal tract and performs such duties as.

Liver Vascular Anatomy Flashcards Quizle

解説. Liver vascular anatomy.svg. English: Diagram of liver, blood vessels, hepatic lobule, and portal tract anatomy with key labels. 日付. 2021年1月30日. 原典 Introduction. Intimate knowledge of the vascular anatomy of the liver is essential for planning and follow-up of liver transplants (particularly those involving partial resection of a living-donor organ), treatment of liver tumors, TIPS, and less frequently the management of other liver diseases .For the most part, multislice computed tomography (CT) and magnetic resonance imaging (MRI) have. The Liver receives around 1500 ml of blood/min The blood supply of the Liver is derived from The Portal Vein (80%) and The Hepatic Artery (20%) Terminal branches of the hepatic portal vein and hepatic artery empty together and mix as they enter sinusoids in the liver. Sinusoids are distensible vascular channels lined with highly fenestrated. Fig. 2 Acrylic vascular mold of the liver. The segmental vascular pedicle (black ring) is formed by a secondary branch of the hepatic portal vein (blue) and a secondary terminal branch of the hepatic artery proper or its accessory artery (red), in addition to the segmental bile duct (green) Liver cells, or hepatocytes, have direct access to the liver's blood supply through small capillaries called sinusoids. Hepatocytes carry out many metabolic functions, including the production of bile. Kupffer cells line the liver's vascular system; they play a role in blood formation and the destruction of cellular debris

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[Biliary and vascular anatomy of the liver

A Division of Liver Medicine Grand Rounds presented by Robert Mitchell, PGY- Anatomy 1 - 4. The liver has a dome-shaped superior surface following the diaphragm contours extending anteriorly to the inferior edge of the liver. The major surface landmark is a sagittal groove containing the ligamentum teres (formerly umbilical vein), within the falciform ligament

liver ultrasound showing education liver segments, normal liver anatomy, portal vein, hepatic veins the biliary tree and ultrasound scanning protocol worksheets GooGhywoiu9839t543j0s7543uw1. Please add analytics5@thewebshowroom.com.au to GA account UA-17294186-1 with Manage Users and Edit permissions - date Aug 10, 2017 A portosystemic vascular anomaly (PSVA) is a grossly apparent aberrant connection between the extrahepatic portal vasculature and the systemic circulation (connecting a branch of the portal vein to the vena cava or azygous vein) that diverts blood to the systemic circulation, bypassing the liver Inside 25% of the RS, we found the vein of segment 6. The RS identification may avoid bile duct injury during laparoscopic cholecystectomy and enables elective vascular control during the right liver resection. 1. Introduction. The knowledge of surgical anatomy is important for the safe execution of any surgical procedure plishing any liver resection. The most important points to bear in mind in relation to left hepatectomy are: (1) a precise recognition of the surgical anatomy of the vascular structures of the liver, especially the bile duct, because of the wide anatomic variations; (2) recognition that the procedure consists of the following three parts: hilar. liver ultrasound showing education liver segments, normal liver anatomy, portal vein, hepatic veins the biliary tree and ultrasound scanning protocol worksheets. GooGhywoiu9839t543j0s7543uw1. Please add analytics5@thewebshowroom.com.au to GA account UA-17294186-1 with Manage Users and Edit permissions - date Aug 10, 2017

Variant hepatic arterial anatomy Radiology Reference

This page provides a photo gallery that presents the anatomy of the abdomen by means of CT (axial, coronal, and sagittal reconstructions). Learn more. Problems in the Liver, Gallbladder, or Pancreas. Acute cholecystitis (gallbladder inflammation caused by gallstones) Cholelithiasis or gallstone formation This stage of liver disease can lead to the development of fibrosis, during which there is excessive deposition of extracellular matrix proteins. The fibrotic response begins with active pericellular fibrosis, which may progress to cirrhosis, characterized by excessive liver scarring, vascular alterations, and eventual liver failure Recognition of variations in abdominal arteries that supply the liver, pancreas, gallbladder, and spleen can help in reducing the blood loss during surgical procedures involving these areas. [6] [7] The vascular anatomy of the celiac trunk also plays a crucial role in arterial anastomoses during surgery To master the anatomy of the liver, take a look at the following resources: Gallbladder Explore study unit Overview of the liver Explore study unit Embryology of the gallbladder and biliary tree. During week four of development, differentiation of embryonic endoderm gives rise to an outpouching of the distal region of the foregut. This.

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