Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1436-2813
    Keywords: prostaglandin E1 ; hepatectomy ; portal venous flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Portal venous flow (PVF) and portal venous pressure (PVP) were examined after the jugular or portal injection of Prostaglandin E1 (PGE) in rats partially hepatectomized by either 40% or 66%. In the 66% hepatectomized animals, the jugular injection of PGE at 5.0 μg/kg/min produced an increase in PVF concomitant with a fall in systemic arterial pressure (SAP), while PVP remained unchanged. The portal injection of PGE at 0.5 μg/kg/min increased PVF to a level equivalent to that evoked by the jugular injection of 5.0 μg/kg/min PGE, without any change in SAP. PVP was reduced synchronistically with an increase in PVF. The PVF response to a portal injection of PGE at 0.5 μg/kg/min was not reproduced in liver intact rats. These results suggest that PGE is potent in increasing PVF in the partially resected condition of the liver and that the portal vascular bed is involved in this response.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1436-2813
    Keywords: hepatocellular carcinoma ; hepatectomy ; primary biliary cirrhosis ; transcatheter arterial embolization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report herein the case of a 69-year-old woman in whom hepatocellular carcinoma (HCC) arising in the precirrhotic phase of primary biliary cirrhosis (PBC) was successfully managed by a right hepatic lobectomy. The patient, who had never received a blood transfusion, had a 4-year history of asymptomatic PBC of Scheuer's histological classification stage II. Abdominal computed tomography (CT) revealed a mass measuring 4.0 cm in the right hepatic lobe, and a right hepatic lobectomy was performed in consideration of her good liver function and the deep location of the tumor in the right lobe. The patient has remained well without any evidence of recurrent disease for 4 years since her operation. A review of the literature revealed only two cases of successful partial hepatectomy, but none of major hepatectomy. Most of the reported cases had been treated with transcatheter arterial embolization (TAE) and were associated with poor survival. Our experience of this patient indicates the potential value of hepatectomy as an alternative to TAE in selected patients with resectable disease and good hepatic function.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of hepato-biliary-pancreatic surgery 3 (1996), S. 12-16 
    ISSN: 1436-0691
    Keywords: obstructive jaundice ; cholangitis ; bilirubin decrease rate ; “b”
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 1978 and 1979 we reported a formula for serum bilirubin decrease after biliary drainage in 62 patients with obstructive jaundice1,2 The bilirubin decrease rate “b” was determined as Y=aebx, where the b value severed as a marker of the severity of the disease and the prognosis of these patients. In the present study, we examined 576 patients with obstructive jaundice, including 33 patients with acute renal failure due to obstructive cholangitis, using this b value. The patients with cholangitis showed a slow reduction pattern, and belonged to the worse b value groups. However, many patients with acute renal failure whose underlying disorder was incarcerated gallstone in the papilla were in the group with a good bilirubin decrease and had no ductal cell degeneration in the liver; then had a good prognosis after satisfactory biliary drainage and organ support. These findings suggest that ductal cell degeneration in the liver is closely related to a better b value. Therefore, a better b value can be expected after biliary drainage in patients with acute obstructive jaundice due to incarcerated stone in the common bile duct, even if there is associated renal failure, since ductal cell degeneration in the liver is not usually noted in these patients.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1436-2813
    Keywords: Portal blood flow ; prostaglandin E1 ; hepatic arterial flow ; liver transplantation ; pig
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Portal venous blood flow (PVF), hepatic arterial blood flow (HAF), and systemic arterial pressure (SAP) were examined after prostaglandin E1 (PGE1) was injected into the vena cava superior (VCS) of liver-transplanted pigs. The injection of PGE1 at 0.2 μg/kg/min for 2 min on the day of transplantation and 3 days later produced an increase in PVF without causing any change in HAF or SAP, the response in PVF being dose-dependent. However, no reliable change in PVF, HAF, or SAP was seen when the same dose of PGE1 was administered 7 days after transplantation. Furthermore, no significant difference was noted among the values for PVF and total hepatic blood flow (THF) during the experimented days, although the HAF value had increased markedly 3 days after transplantation. These findings suggest that PGE1 is effective in increasing PVF in the liver transplanted condition; however, the hepatic circulatory improvement attributed to this agent would be limited to the first few days following transplantation.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1436-2813
    Keywords: ursodesoxycholic acid ; portal venous flow ; hepatectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Portal venous flow (PVF) was examined after portal injection of ursodesoxycholic acid (URSO) in rats that were partially hepatectomized by either 40% or 66%. URSO (10 mg/kg per minute) was injected into the portal vein and was thereafter observed to increase PVF concomitantly with a fall in portal venous pressure (PVP) in control animals. The increase in PVF in response to URSO was dose-dependent. In hepatectomized rats, the PVF response was augmented when the same dose of URSO was portally injected, and the magnitude of response was enhanced in proportion to the volume of liver resected. These results suggest that URSO increases PVF through vasodilation of the portal vessels, and therefore URSO is considered to increase PVF potently in a partially hepatectomized condition.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1436-2813
    Keywords: prostaglandins ; liver ; portal vein ; circulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Changes in portal venous blood flow (PVF) and systemic arterial blood pressure (SAP) were examined following prostaglandin E1 (PGE) application to the greater omentum and femoral vein in 66%-hepatectomized rats. PVF increased when PGE was administered to the omentum and femoral vein at 7.5 μg/kg per min for 2 min. The magnitude of PVF response due to both administrations was dose-dependent, but the duration of the PVF response in the omental application was longer than that in the femoral administration. SAP was unchanged after omental application, while femoral administration reduced SAP concomitant with an increase in PVF. These results suggest that, in this hepatectomized model, the omentum is a better site for PGE administration than the vein, and that omental PGE delivery is also effective for enhancing PVF without inducing any changes in SAP.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1436-2813
    Keywords: liver regeneration ; partial hepatectomy ; portal pressure ; shear stress ; rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The concept of injury in liver regeneration after partial hepatectomy (PHx), and the reason hepatocytes that have not been directly injured regenerate, remain unclear. It is known that shear stress resulting from blood flow plays an important role in the mechanism of remodeling blood vessels, and portal pressure reflects shear stress. This study was conducted to determine whether acute portal hypertension (APH) can become a trigger of liver regeneration as shear stress following PHx in a rat model. Portal pressures became elevated immediately after 70% and 90% PHx, peaking on postoperative day (POD) 3, and thereafter decreasing in proportion to the diminution of liver regeneration. The portal pressures after 90% PHx were significantly higher than those after 70% PHx even on POD 7, while those of the portocaval (PC) shunt groups decreased following PC shunting both with and without 70% PHx. The liver/body weight (LW/BW) ratio also decreased in the PC shunt both with and even without 70% PHx. The gradient expressions of class I antigen on sinusoidal endothelial cells (SEC) were found only in the periportal area, which has the highest portal pressure in the healthy rat liver. However, after hepatectomy these expressions were detected from the periportal area to the central venous area. These results suggest that APH as shear stress following PHx may not only become a trigger of hepatocyte regeneration, but also of SEC regeneration, and that surplus APH induces liver dysfunction.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1436-2813
    Keywords: Key Words: esophagectomy, pyloric-preserving pancreatoduodenectomy, stomach tube
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1435-5922
    Keywords: liver abscess ; multiloculation ; hepatectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report the case of a 61-year-old woman with cryptogenic liver abscesses who had been profoundly ill with severe upper abdominal pain, impaired consciousness, prostration, continuous high fever secondary to sepsis, and thrombocytopenia (platelets, 1–5 × 104/mm3) since admission. Ultrasonograms and computed tomograms revealed two separate multiloculated lesions in the right lobe of the liver, consistent with the liver abscesses. Immediately after diagnosis, percutaneous abscess drainage was performed under ultrasonographic guidance; however, only a small amount of pus was drained, prompting continuous irrigation of the abscess cavity. Four days later, transcatheter hepatic arterial infusion of antibiotics was attempted. However, the abscesses had enlarged and her general condition had worsened. On hospital day 8, she underwent right hepatectomy because the multiloculated lesions were refractory to drainage. The operation was successful in terms of hepatectomy, although she continued to suffer from sepsis, secondary right subphrenic abscess formation, and prolonged thrombocytopenia with associated coagulation disorders for two months. Examination of multiple cross sections of the resected specimen disclosed that the lesions consisted of aggregations of multiple small locules. There was no communication between the locules and there were true septations, rather than multiloculated lesions with pseudoseptations. The patient has been well for 2 years without recurrent abscess of the liver or any infectious disease.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'indication de la duodénopancréatectectomie avec conservation du pylore (DPCP) est controversée du point de vue carcinologique. Cette étude avait pour but d'analyser le mode de propagation des tumeurs ampullaires et de vérifier que les tissus laissés en place par la DPCP ne contenaient pas d'extension cancéreuse. Nous avons examiné 40 pièces consécutives de duodénopancréatectomie pour cancer de la muqueuse (n=4), pour cancer envahissant (mais non pénétrant) le sphincter d'Oddi (n=1), pour cancer envahissant la couche sous muqueuse du duodénum (n=12), pour cancer envahissant le muscle propre du duodénum (n=5), pour cancer envahissant la couche sousséreuse du duodénum (n=7) et pour cancer envahissant le parenchyme pancréatique (n=11). Cinq cas de cancer de la muqueuse ou de cancer envahissant (mais non pénétrant) le sphincter, étendu localement sans métastases lymphatiques, ont une survie à 5 ans de 80% sans récidive, survie meilleure (p〈0.05) que celle observée lorsque le cancer est plus avancé (40%). Soixante-trois pour-cent des 35 tumeurs restantes avaient des métastases lymphatiques régionales. La survie à 5 ans des 28 pour-cent des patients ayant un cancer pénétrant le muscle propre était pirc (p〈0.05) que la survie des 59 pour-cent des patients ayant une tumeur moins avancée. Il n'y avait aucun envahissement des tissus qui auraient été conservés dans une DPCP. Dans trois cas (7.5%), il existait un cancer gastrique concomitant. En conclusion, le cancer ampullaire qui ne pénètre pas le sphincter se propage localement. Les cancers pénétrant le muscle propre du duodénum sont associé à un plus mauvais pronostic. La DPCP est une alternative attractive à la duodénopancréatectomie pour le cancer ampullaire car les tissus laissés en place ne sont pas envahis par ces cancers. Il faut être averti, cependant, de la possibilité de cancer gastrique associé.
    Abstract: Resumen Existe controversia sobre la aplicación de la pancreatoduodenectomía con preservación del píloro (PPPD) en el manejo de los neoplasmas malignos. El presente estudio estuvo orientado a establecer el patrón de extensión del cáncer ampular y a comprobar si la extensión tumoral en las etapas resecables no afecta los tejidos que se preservan en una PPPD. Revisamos 40 especímenes de pancreatoduodenectomías de Whipple consecutivas: cáncer mucoso, 4 casos; cáncer que invadía (pero no penetraba) el esfinter de Oddi, 1; cáncer que invadía la submucosa del duodeno, 12; cáncer que invadía la capa muscular del duodeno, 5; cáncer que invadía la capa subserosa del duodeno, 7; y cáncer que invadía el parenquima pancreático, 11. Cinco casos de cáncer mucoso o de cáncer que invadía (pero no penetraba) el esfinter hicieron extensión local sin invasión ganglionar y exhibieron una tasa de sobrevida a cinco años de 80% sin recurrencia, siendo mejor (p〈0.05) que la tasa de 40% de sobrevida en los casos más avanzados. Sesenta y tres por ciento de los otros 35 casos presentaban metástasis a los ganglios regionales. La tasa de sobrevida a cinco años de 28% en aquellos tumores que penetraban la capa muscular fue peor (p〈0.05) que la tasa de 59% en los tumores menos avanzados. Ninguno de los casos presentaba invasión de las estructuras anatómicas que habrían sido preservadas en una PPPD. En 3 casos (7.5%) coexistía cáncer gástrico. En conclusión, el cáncer ampular que no penetra el esfínter se extiende localmente. Una vez que ha penetrado el esfínter, generalmente se extiende en forma regional y causa recurrencias. El cáncer que penetra la capa muscular del duodeno conlleva un peor pronóstico. La PPPD es una atractiva alternativa a la operación de Whipple para el cáncer ampular, puesto que no se halló invasión de los tejidos que se preservan en la PPPD. Sin embargo, los cirujanos deben estar conscientes de la posibilidad de un cáncer gástrico concomitante cuando realicen PPPD.
    Notes: Abstract Controversies exist regarding the application of the pylorus-preserving pancreatoduodenectomy (PPPD) to malignancies. This study was intended to disclose the pattern of spread of ampullary cancer and to substantiate that tumor spread at resectable stages does not involve the tissues preserved by PPPD. We examined 40 consecutive Whipple pancreatoduodenectomy specimens: mucosal cancer, 4 cases; cancer invading (but not penetrating) the sphincter of Oddi, 1; cancer invading the submucosa of the duodenum, 12; cancer invading the proper muscle of the duodenum, 5; cancer invading the subserosal layer of the duodenum, 7; and cancer invading pancreatic parenchyma, 11. Five cases of mucosal cancer or cancer invading (but not penetrating) the sphincter spread locally without nodal involvement and showed a 5-year survival of 80% without recurrence, being better (p〈0.05) than the 40% survival for patients with more advanced cancers. Sixty-three percent of the remaining 35 cases had metastasis to regional lymph nodes. The 5-year survival of 28% among those with cancer penetrating the proper muscle was worse (p〈0.05) than the 59% survival for those with less advanced cancers. No cases had involved the anatomic structures that would have been preserved by a PPPD. In three cases (7.5%), gastric cancer coexisted. In conclusion, ampullary cancer not penetrating the sphincter spreads locally. Once penetrating the sphincter, it often spreads regionally and causes recurrence. Cancer penetrating the proper muscle of the duodenum bears a worse prognosis. PPPD is an attractive alternative to the Whipple operation for ampullary cancer because no involvement was found in the tissue preserved by the PPPD. However, surgeons should be aware of a concomitant gastric cancer when doing a PPPD.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...