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B Ringe

Publications and source records attributed to B Ringe.

At least 217 records · Page 12Linked to original sources
PubMed1989

Unusually rapid development of a HBsAG-positive liver cirrhosis after liver transplantation.

We report the case of a 44-year-old man who was transplanted in 1986 for hepatocellular carcinoma in a HBsAG-positive liver cirrhosis. The patient had no severe complications postoperatively. He received passive immunization for the prevention of hepatitis B reinfection during the first 6 months after liver grafting. Twelve months after the transplantation the new liver was reinfected with hepatitis B virus. Without any clinical or laboratory signs of severe hepatitis, the patient developed a histologically proven complete liver cirrhosis within 8 months after reinfection of the graft. The reasons for this might have been, first, a deleterious course of the infection under immunosuppressive therapy, and, second, the additional influence of a postoperatively acquired CMV infection or the combined toxic influence of cyclosporin A and its metabolites on the acute inflammation in the liver.

Adult↗
PubMed1989

Lignocaine metabolite formation as a measure of pre-transplant liver function.

A method for rapid assessment of hepatic function in liver donors based on the formation of the lignocaine metabolite monoethylglycinexylidide (MEGX), was used in a prospective study of 69 donor-recipient pairs. The probability of graft survival over 120 days was significantly higher for livers from donors with MEGX test values above 90 micrograms/l than for those from donors with MEGX values of 90 micrograms/l or below. Other liver function tests (bilirubin, prothrombin time, activity of aminotransferases, glutamate dehydrogenase, and cholinesterase, indocyanine green clearance, and galactose elimination capacity) were inefficient at predicting early outcome of transplantation. For a 20-day graft survival, the MEGX test showed prognostic sensitivity of 73% and specificity of 78%. These findings suggest that the MEGX formation test could be valuable for selection of donor organs.

Adolescent↗
PubMed1989

Bile duct injury as a part of diagnostic criteria for liver allograft rejection.

The decisive criterium of acute liver allograft rejection was found to be the presence of the diagnostic triad of acute rejection; ie, the presence of portal inflammatory mixed infiltrates, venous endothelialitis (both portal and central), and bile duct injury. On the basis of the presence of each of the components of the diagnostic triad, criteria for the diagnosis of different degrees of acute rejection were developed, particularly focusing attention on a detailed analysis of bile duct injury. Bile duct injury was shown to be an essential part of the histopathologic changes in all grades of acute rejection in the liver allograft, the grade of severity of bile duct injury correlating to a certain extent with the grade of severity of acute rejection. Our analyses have made it evident that bile duct injury, which most probably occurs earlier in the process of acute rejection than endothelialitis, is a more sensitive parameter than endothelialitis in the diagnosis of acute rejection. Furthermore, our analyses have revealed that bile duct injury in acute rejection is likely to be an irreversible process, depending on the number of episodes of acute rejection that previously occurred. On the other hand, it has become clear from our results that bile duct injury must not be considered to be an absolute histopathologic marker of acute rejection; however, it does have to be judged synoptically in connection with the other components of the diagnostic triad and the changes that the triad cause in the hepatic parenchyma. Additional analyses of the grade of severity of cholostases have shown that the cholostases are, to a certain degree, an accompanying phenomenon of the histopathologic changes characterizing acute rejection rather than a histopathologic change that is as significant as the presence of the components of the diagnostic triad.

Bile Ducts↗
PubMed1989

Liver transplantation for malignant tumours.

Despite considerable overall progress in human liver transplantation the results obtained in patients with malignant tumours have not improved significantly over the past years. One of the crucial questions in the ongoing controversial discussion remains the identification of tumour patients with the most favourable prognosis. In a consecutive series of 114 patients who received hepatic transplants for various malignant tumours of the liver and biliary tract, at least some factors could be shown to play a prognostic role. Regarding the histological type of tumour, fibrolamellar carcinoma, epitheloid haemangioendothelioma, and endocrine hepatic metastases seem to have a better long-term survival, whereas cholangiocellular carcinoma and other liver metastases had the worst outcome. In patients with primary liver or proximal bile duct cancer there was a significant influence of the pathological tumour stage at the time of transplantation: significant palliation or cure was almost essentially restricted to patients with early tumour stages as compared with advanced primary tumours and extrahepatic spread where early tumour recurrence developed in all recipients. Thus, the present concept for the treatment of malignant hepatobiliary tumours should include partial as well as total hepatectomy with subsequent liver replacement. In cases of non-resectable lesions or intrahepatic tumour recurrence following previous resection, liver transplantation offers the only chance for long-term survival.

Adenoma, Bile Duct↗
PubMed1989

The role of liver transplantation in hepatobiliary malignancy. A retrospective analysis of 95 patients with particular regard to tumor stage and recurrence.

The role of hepatic transplantation in patients with nonresectable liver or bile duct cancer remains a controversial issue. An analysis of 95 consecutive cases was undertaken to evaluate retrospectively the pathological tumor stage--in accordance with the TNM system--and outcome after transplantation. Included were patients with the following diagnoses: hepatocellular carcinoma (n = 52), cholangiocellular carcinoma (n = 10), hepatoblastoma (n = 2), hemangiosarcoma (n = 2), bile duct carcinoma (n = 20), and liver metastases from different primary tumors (n = 9). The overall actuarial survival rate at 5 years was 20.4%. Median survival improved significantly within the last 4 years as compared to the preceding era (18.06 vs. 4.0 months). Currently 27 patients are alive, with the longest follow-up more than 12 years. The incidences of residual or recurrent tumor were 27 and 28, respectively. Particularly in patients who underwent transplantation for hepatocellular or bile duct carcinoma without extra-hepatic tumor spread, the results were significantly better; median survival time achieved for these two groups were 120 (p less than 0.01) and 35 months (p less than 0.05). Prolonged survival without tumor recurrence was not seen in patients with cholangiocellular carcinoma or liver metastases. These results demonstrate clearly that liver transplantation for hepatobiliary malignancy is still justified on the premises of careful patient selection by adequate tumor staging.

Actuarial Analysis↗
PubMed1989

[In situ hybridization in detecting virus infections in biopsies following orthotopic liver transplantation].

Using the in-situ DNA hybridization we studied 62 liver biopsies from 34 patients for the presence of CMV-, EBV-, HBV-, and HSV-Genome. In the first biopsies positivity-rates were as follows: CMV 62%, EBV 71%, HBV 15%, HSV 15%. In 6 cases a conversion from a negative intranuclear CMV-status to a positive status was seen correlating with an increase in serological titers and with clinical signs of viral infection.

Adolescent↗
PubMed1989

[Surgery of benign liver tumors].

The most frequent benign liver tumors are hemangioma, focal nodular hyperplasia (FNH) and adenoma. It is essential for the diagnosis to differentiate these lesions from malignant tumors. While sonography, bolus-CT scan, chole-/bloodpool scintigraphy usually yield a safe diagnosis of hemangioma or FNH, adenomas do not show characteristic features. Operation is indicated for hemangioma of FNH only in case of tumor growth and/or symptoms. Operation for adenoma is as a rule indicated because of possible malignant transformation or uncertain differentiation from malignoma. Operative procedures include anatomical/atypical liver resection, ex situ resection or liver transplantation.

Adolescent↗