Search Results
Results 601 - 650 of 1378
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Hiraoka K - - 2001
We present two patients who underwent a portal stent placement for bleeding jejunal varices of the afferent loop caused by extrahepatic portal venous stenosis. Case 1 involved a 66-year-old woman who developed bleeding jejunal varices due to extrahepatic portal venous stenosis 1 year after a pancreaticoduodenectomy with intraoperative radiation therapy. ...
Venkat-Raman N - - 2001
Congenital absence of portal vein (CAPV) is a rare abnormality, which may be associated with other abnormalities. We report a case of prenatal diagnosis of absent portal vein confirmed on postnatal ultrasonography and computed tomography scan. The ultrasound features of CAPV include dilated intra-abdominal segment of umbilical vein, dilated inferior ...
Dalvi A N - - 2001
Successful laparoscopic cholecystectomy has been reported in patients with cirrhosis of liver with portal hypertension; the procedure has, however, not been reported in patients with portal vein thrombosis, portal cavernoma and portal hypertension. We report an 18-year-old man with portal hypertension due to portal vein thrombosis and portal cavernoma who ...
Rong Xiu D - - 2001
Auxiliary liver transplantation (ALT) has been reintroduced in clinical cases recently and is now believed to be a viable alternative to orthotopic liver transplantation. To provide a simple rat ALT model for studying the physiological and immunological aspects of the ALT graft, a new ALT was performed, and the comparison ...
Glanemann M - - 2001
Symptomatic portal vein stenosis is an uncommon complication after liver transplantation. Portal vein angioplasty has been successfully established for treatment of portal vein stenosis using mesenteric or percutaneous, transhepatic approaches. We herein report on a patient who suffered from variceal bleeding due to portal hypertension 3 months after liver transplantation. ...
Mehnert F - - 2001
The aim of this study was to evaluate the value of automatic bolus tracking for biphasic spiral CT of the liver in comparison with time delay examinations. Forty patients scheduled for a biphasic spiral CT of the liver randomly were examined either with time delay of 25 s for the ...
Wakabayashi H - - 2001
We evaluated the changes in hepatic arterial and portal perfusion in nonembolized as well as in embolized lobes after portal venous branch embolization (PVE) with dynamic helical computed tomography (CT). Six patients with hepatic malignancies, who underwent PVE prior to a subsequent hepatectomy, were the subjects of this study. We ...
Kwon D - - 2001
The topographic anatomy of the ventral margin of the caudate lobe of the human liver is still obscure. We hypothesized the existence of a "precaudate plane", as a flat or slightly curved plane defined by the ventral margins of both the ligamentum venosum and hilar plate. Using 61 cadaveric liver ...
Ezaki T - - 2001
A simple technique is described to perform hepatectomy. The technique consists of portal vein blood flow occlusion using degradable starch microspheres injected through an ultrasonically-guided puncture at the point of resection root and hepatic artery occlusion. The method minimizes ischemic damage to the liver remnant and is easy to perform.
Bayraktar Y - - 2000
The main portal vein web is probably a consequence of portal vein thrombosis, which is a very rare cause of portal hypertension. Principal manifestations are related to the degree of portal hypertension. In the literature, no data has been found for the treatment modality of portal vein web. We report, ...
Christopoulou-Aletra H - - 2000
The anatomical knowledge, in the collection of books named after Hippocrates' the Hippocratic Corpus, is usually vague and limited. This is mainly due to the respect for the dead held by the ancients. Though the Hippocratic books, for the first time, supported the rationality of the aetiology of diseases, and ...
Schroeder R A - - 2000
Portal hypertension is associated with a wide range of pulmonary pathophysiologies, ranging from portopulmonary hypertension to hepatopulmonary syndrome. Although the clinical and pathological features of pulmonary dysfunction in this setting have been extensively characterized, the underlying biology is not well understood. Specifically, the role of mediators that regulate mesenteric vascular ...
Higaki I - - 2000
Tumor thrombus in the portal vein is refractory to therapy and a serious negative prognostic factor in hepatocellular carcinoma. We describe herein the case of a patient in whom an expandable metallic stent was successfully employed to treat portal vein tumor thrombus by restoring blood flow. An expandable metallic stent ...
Fujii Y - - 2000
BACKGROUND/AIMS: Portal vein embolization is becoming more common as a method of preventing hepatic failure after an extended hepatectomy but its mechanism is not well understood. This clinicopathological study focused on its mechanism. METHODOLOGY: Thirty patients who underwent extended hepatectomy after portal vein embolization were evaluated. Liver volume was measured ...
Tsai H M - - 2000
BACKGROUND/AIMS: To study the portal flow patterns from CTAP (computed tomography of arterial portography), then to predict the existence of esophageal varices bleeding clinically. METHODOLOGY: 192 patients who underwent CTAP from superior mesenteric artery infusion were recruited in this study. The obtained images were classified according to our proposed criteria. ...
Koizumi J - - 2000
BACKGROUND: Computed tomography during arterial portography (CTAP) under temporary balloon occlusion of the hepatic artery (BOHA-CTAP) was introduced to evaluate pseudolesions caused by portal venous impairments such as arterioportal shunt and tumor thrombus. METHODS: BOHA-CTAP was performed in seven patients with hepatocellular carcinoma and correlated with clinical outcomes. For patients ...
Martínez-Cuesta A - - 2000
BACKGROUND: We evaluated the efficacy and safety of CO(2) wedged hepatic venography (CO(2) WHV) by comparing it with direct transjugular (DP) and indirect arterial portography (IP). METHODS: Twenty-one CO(2) WHV and IP examinations were performed in 20 patients; 13 of them also underwent DP within 48 h of CO(2) WHV ...
Ishikawa T - - 2000
The three-dimensional (3D) relationship among the hepatic domains and the efferent central and afferent portal veins was investigated by macroscopy, microscopy, and computer-aided 3D reconstruction methods. To clearly distinguish the pericentral domain from the periportal, we used CCl(4)-treated mice and diabetic house musk shrews, which show typical pericentral necrosis and ...
Achiron R - - 2000
OBJECTIVES: Anomalies of the fetal venous system are poorly documented and their pathogenesis is not well understood. The present study was undertaken to review the spectrum of fetal central veins and umbilico-portal system anomalies, and to propose a classification system. METHODS: A 7-year restrospective survey was conducted. RESULTS: Nineteen fetuses ...
Ricci P - - 2000
PURPOSE: To assess the role of contrast-enhanced color Doppler US in the differential diagnosis of benign and malignant portal vein thrombosis. MATERIAL AND METHODS: Fifty-six patients with portal vein thrombosis underwent color and power Doppler US examination before and after i.v. injection of galactose-palmitic acid suspension. The criterion for diagnosing ...
Papaziogas T - - 2000
We present three cases of preduodenal portal vein in adult people, which were diagnosed in our department. All of them were identified during elective operation for cholelithiasis, caused some technical difficulties to the performance of the operation, but led to no major intraoperative or postoperative complications. None of them had ...
Sugita M - - 2000
BACKGROUND: The drainage veins of the gallbladder (cystic veins) are important hepatic metastatic routes of gallbladder cancer. We studied the cystic vein inflow portions of the intrahepatic vessels by computed tomography during angiography (angio-CT). METHODS: The subjects were 27 unoperated pancreatic-biliary patients. After superselective catheterization of the cystic artery, angio-CT ...
Baba Y - - 2000
PURPOSE: We assessed the prevalence and types of intrahepatic portal venous variations by helical computed tomography performed with arterial portography (CTAP). METHODS: In 192 patients without evidence of vascular invasion or distortion, CTAP images were reviewed retrospectively to identify portal venous variations. RESULTS: Of the 192 patients examined, 10 (5.2%) ...
Jones E A - - 2000
Alagille syndrome (AGS, MIM 118450) is an autosomal dominant disorder with a variable phenotype characterised by hepatic, eye, cardiac, and skeletal malformations and a characteristic facial appearance. Mutations within the gene JAGGED1 (JAG1), which encodes a ligand for NOTCH receptor(s), has been shown to cause Alagille syndrome. Interactions of NOTCH ...
Sakamoto Y - - 2000
BACKGROUND: It is widely believed that using the "tunneling" procedure during pancreatoduodenectomy is a safe maneuver because the anterior tributaries of the portal vein (PV) are absent or very rare. METHODS: The head of the pancreas with the duodenum and the common bile duct (CBD) was obtained from 22 autopsy ...
Kassem A M - - 2000
BACKGROUND AND STUDY AIMS: The azygos vein plays an important role as a drainage system for the superior portosystemic collateral circulation in portal hypertensive patients. Endoscopic ultrasonography (EUS) and Doppler EUS allow the performance of hemodynamic studies of the azygos vein. In this study, we observed the changes in the ...
Inaba S - - 2000
BACKGROUND/AIMS: Preoperative transhepatic portal vein embolization may not always be sufficient to achieve the desired changes in contralateral hepatic volume and function. The beneficial role of additional transcatheter arterial embolization performed after inadequate response to preoperative transhepatic portal vein embolization is described. METHODOLOGY: Four patients underwent both preoperative transhepatic portal ...
Mira Y - - 2000
We describe a patient with left branch portal vein thrombosis involving two thrombophilic alterations, the prothrombin G20210A mutation and protein C deficiency. In spite of not being under anticoagulant treatment, the thrombus in the portal vein underwent complete and spontaneous lysis. No other risk factors were detected and no family ...
Song B - - 2000
BACKGROUND: We investigated the constituting collateral vessels in cavernous transformation of the portal vein (CTPV) caused by tumor thrombosis of hepatocellular carcinoma (HCC) by using contrast-enhanced spiral computed tomographic (CT) examination. METHODS: Fifty-four histopathologically proven HCC patients with tumor thrombosis-induced CTPV were retrospectively included and assigned to cirrhosis negative (n ...
Cwikiel W - - 2000
An 8-year-old boy with a 21/2 year history of portal hypertension and repeated bleedings from esophageal varices, was referred for treatment. The 3.5-cm-long occlusion of the portal vein was passed and the channel created was stabilized with a balloon-expandable stent; a portosystemic stent-shunt was also created. The portosystemic shunt closed ...
Shimizu Y - - 2000
BACKGROUND: Extended hepatectomy may result in postoperative liver failure. The aim of this study was to evaluate the effects of arterialization of the portal vein on oxygen supply, hepatic energy metabolism and liver regeneration after extended hepatectomy. METHODS: Portal haemodynamics were evaluated 0 or 10 days after arterialization of the ...
Nishiguchi S - - 2000
Percutaneous transhepatic portal vein embolization (PTPE) causes atrophy of the embolized lobe and compensatory hypertrophy of the nonembolized lobe, and improves the safety of hepatectomy. We report a patient with cholangiocarcinoma who underwent embolization of both anterior and posterior branches of the right portal vein before hepatectomy. Scintigraphy with Tc-99m ...
Ogimoto A - - 2000
A 62-year-old woman was admitted to hospital because of chest oppression and abdominal discomfort. Coronary arteriography revealed that the proximal left anterior descending artery had a large thrombus with TIMI (Thrombolysis in Myocardial Infarction) Grade 3 flow. On the second hospital day, she had sudden hematemesis because of esophageal varices. ...
Debernardi-Venon W - - 2000
BACKGROUND/AIMS/METHODS: During hepatic vein catheterisation, in addition to measurement of hepatic venous pressure gradient (HVPG), iodine wedged retrograde portography can be easily obtained. However, it rarely allows correct visualisation of the portal vein. Recently, CO(2) has been suggested to allow better angiographic demonstration of the portal vein than iodine. In ...
Park C M - - 2000
AIM: To evaluate findings of arterioportal shunts not directly related to hepatocellular carcinoma (HCC) which were seen within third-order portal branches on computed tomography (CT) during hepatic arteriography (CTHA), arterial portography (CTAP), and dual phase spiral CT. MATERIALS AND METHODS: At CTHA in 112 patients, we examined third-order portal vein ...
Bhattacharjya T - - 2000
BACKGROUND: Thrombosis of a portal vein conduit after liver transplant is an uncommon clinical situation. Percutaneous thrombolytic therapy for this condition has not been widely described. METHODS: We describe a case of thrombosis of a portal vein (PV) conduit subsequent to orthotopic liver transplantation that was successfully treated by percutaneous ...
Owen R J - - 2000
During a transjugular portosystemic stent-shunt (TIPSS) procedure a portal vein laceration occurred with subsequent intraperitoneal hemorrhage. A PTFE-covered nitinol stent was successfully placed eliminating the leak and creating a functioning portosystemic shunt. This case demonstrates both the importance of portal vein puncture more than 1 cm from the bifurcation and ...
Cárdenas A - - 2000
Ascites is the most common complication of cirrhosis. It is associated with profound changes in the splanchnic and systemic circulation and with renal abnormalities. The development of ascites is related to the existence of severe sinusoidal portal hypertension that causes marked splanchnic arterial vasodilation and a forward increase in the ...
Szatmári V - - 2000
A dilated, tortuous blood vessel was identified sonographically in the right medial liver lobe in a puppy with severe ascites. This vessel was thought to represent the dilated right medial portal vein branch. Using pulsed wave Doppler ultrasonography, retrograde, abnormally pulsatile flow was detected in both the dilated right medial ...
Ramchandran T M - - 2000
A 29-year-old man with extrahepatic portal vein obstruction who underwent variceal eradication by sclerotherapy six years ago, was admitted with hypotension and abdominal pain. Abdominal paracentesis yielded frank blood. Laparotomy showed bleeding from a large ectopic vessel along the splenorenal ligament. The vessel was ligated and the patient recovered.
Nagelschmidt M - - 2000
BACKGROUND: The expansion of the laparoscopic techniques to the critically ill patient is currently under debate. In order to evaluate the potential risks of performing laparoscopy in a body with signs of sepsis, the effects of the pneumoperitoneum were studied in a porcine model of mild endotoxemia. METHODS: Twenty-eight pigs ...
Yamamoto H - - 2000
Absence of the bifurcation of the portal vein is an extremely rare anomaly and the misled ligation of the portal vein would result in the lethal hepatic failure. In this paper, a resected case of hilar cholangiocarcinoma with this anomalous portal venous system is first presented. Preoperative percutaneous transhepatic portography ...
Inoue T - - 2000
The complete resection of the hepatoduodenal ligament is associated with enormous surgical invasion, which frequently results in postoperative hepatic dysfunction secondary to interruption of the reconstructed artery. We administered partial portal arterialization by anastomosis of the gastroduodenal artery to the portal vein without reconstruction of the hepatic artery in the ...
Sanyal A J - - 2000
Transjugular intrahepatic portasystemic shunts, or TIPS, are used to create a low-resistance channel between the hepatic vein and the intrahepatic portion of the portal vein by deployment of an expandable metal stent. TIPS function like side-to-side surgical portacaval shunts, but their placement does not require anesthesia and major surgery. This ...
Kogure K - - 2000
To identify portal segmentation and a portal fissure in the caudate lobe of the human liver in relation to the hepatic venous system and the external notch at the caudal edge of the caudate lobe. Although the anatomy of the caudate lobe has been studied, the detailed anatomy has not ...
Czubalski A - - 2000
We examined 27 resin casts of foetal liver veins and found three types of connection between portal vein and portal sinus. The most frequent connection was endo-lateral (66.7%), when the end of the portal vein joins with the lateral wall of the portal sinus. The next type was latero-lateral (14.8%). ...
Tanaka J i - - 2000
We report a case of gallbladder carcinoma associated with biliary obstruction and portal vein stenosis caused by massive lymph node metastases. The patient, a 59-year-old woman, was treated with self-expandable metallic stents--a spiral Z-stent in the portal vein, and a Wallstent in the bile duct--and intra-arterial infusion chemotherapy. She returned ...
Honda H - - 2000
We analyzed the hemodynamic properties and vascular supply changes in relation to the carcinogenesis of hepatocellular carcinoma (HCC), selecting 18 premalignant and malignant nodules less than 3 cm diameter (from 14 patients) for our study. The computed tomographic (CT) arteriography and CT arterioportography (CTAP) findings for these nodules were correlated ...
Ducerf C - - 2000
BACKGROUND: The order of revascularization in human liver grafts is still discussed. This study tries to answer this question in terms of hemodynamic data. STUDY DESIGN: Fifty-nine patients were randomized in this study to compare hemodynamic data just before and 15 minutes after revascularization of liver grafts in relation to ...
Kojima Y - - 2000
Microwave coagulation therapy (MCT) is one of the treatment modalities for patients with hepatocellular carcinoma (HCC). A 67-year-old man with liver cirrhosis underwent MCT during a laparotomy for a deeply located HCC (2.5 cm in diameter) at the border of the anterior and posterior segments of the right hepatic lobe. ...
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