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Biomedical subjects

P Paliard

Publications and source records attributed to P Paliard.

At least 37 records · Page 2Linked to original sources

[Adrenal metastases of hepatocellular carcinoma. Therapeutic options].

AIM OF THE STUDY: The aim of this study was to evaluate the therapeutic modalities, particularly surgical treatment, for adrenal metastasis of hepatocellular carcinomas. PATIENTS AND METHODS: This series included 13 patients (mean age: 64 years) with hepatocellular carcinoma on cirrhotic liver (n = 8) or healthy liver (n = 5). The adrenal metastasis was synchronous in four cases, metachronous in nine, unilateral in ten cases, and bilateral in three. Resection of the adrenal metastasis was performed in seven patients, combined with the resection of the hepatic carcinoma in three cases or secondarily performed in four. The metastasis was not resected in six patients because of poor liver function or poor patient conditions; two patients were treated with percutaneous ethanol injection, one with radiation and three received only a symptomatic treatment. RESULTS: After adrenalectomy combined with liver resection, two patients died in the postoperative course in relation with pulmonary embolism (n = 1) or acute pancreatitis (n = 1). The mean survival in the five other patients was 38 months after the adrenalectomy and 58.6 months after the liver resection. After percutaneous ethanol injection, one patient survived 47 months and the other one 7 months only. After radiation, the patient survived 18 months. After symptomatic treatment, the mean survival was only 7.3 months. CONCLUSION: The present data suggest that adrenal metastasis, either isolated or associated with a well-controlled intrahepatic recurrence, could be treated surgically when the resection is technically feasible. This aggressive management seems the only chance to offer a long-term survival to selected patients.

Adrenal Gland Neoplasms↗

Primary hepatocellular carcinoma in workers exposed to vinyl chloride: a report of two cases.

BACKGROUND: Vinyl chloride (VC), an industrial toxic gas, has a dose-dependent carcinogenicity in rodents and has been responsible for multiple cases of liver angiosarcoma in humans. The aim of this study was to describe histopathologic liver alterations and to evaluate risk factors for hepatocellular carcinoma in two workers from the same plant, both of whom had primary nonangiosarcoma liver tumors and were exposed to VC. METHODS: Clinical, biochemical, serologic, and pathologic data were reviewed at the time of hepatic resection. Clinical and biologic follow-up were available for several years before the diagnosis of hepatocellular carcinoma. RESULTS: Liver alterations distant from the tumor site were compatible with ongoing exposure to VC in both cases. Several areas containing dysplastic hepatocytes were present in nontumoral liver in one patient. Both patients are alive after partial liver resection, and 1 has had 5 years of follow-up without recurrence. CONCLUSIONS: Exclusion of classic risk factors for noncirrhotic hepatocellular carcinoma of the liver in both patients suggests a relationship between VC exposure and observed tumors. Systematic long term follow-up with biology and ultrasonography for workers exposed to VC may result in relatively early diagnoses of liver tumors and long term survival in some cases.

Carcinoma, Hepatocellular↗

Adult cirrhotic liver explants: precancerous lesions and undetected small hepatocellular carcinomas.

BACKGROUND & AIMS: Despite recent advances in imaging techniques of the liver, it remains difficult to detect small precancerous lesions or hepatocellular carcinomas (HCCs) in cirrhotic livers. The goal of this study was to determine the prevalence of undetected small HCCs in liver explants of adult cirrhotic patients undergoing liver transplantation and to evaluate the association of HCCs with hepatic lesions considered premalignant. METHODS: Eighty consecutive liver explants were analyzed for the presence of macroscopically atypical nodules, which were then pathologically described as macroregenerative nodules, high-grade dysplastic nodules, areas of small liver cell dysplasia, and HCCs. RESULTS: The prevalence of HCC was 17.5% with a mean size of 11.6 mm. HCCs were more frequently found in men (22%) than in women (4.8%; P < 0.05) and in patients older than 50 years at the time of liver transplantation (35.7% vs. 7.7% in patients younger than 50 years; P < 0.05). The prevalence of HCCs was identical in alcoholic and viral cirrhosis. HCC nodules were significantly associated with the presence of high-grade dysplastic nodules. CONCLUSIONS: Small HCCs and precancerous lesions are frequently found in cirrhotic liver explants, especially in men older than 50 years. This finding should be included in the decision-making analysis for liver transplantation.

Adolescent↗

[Liver transplantation for alcoholic liver disease. Selective indications].

Alcoholic liver disease represents about 15% of all indications for liver transplantation. Patient selection is difficult, and must be rigorous. Peri-operative risks are evaluated on the same basis as for other chronic liver diseases, with special attention for alcoholic extra-hepatic morbidity and nutritional status. Definite withdrawal from alcohol is mandatory. Predictive factors of long-term abstinence are the absence of psychopathologic state, an adequate social and affective situation, the possibilities of professional reinsertion, and a strong motivation of the patient towards liver transplantation. A six-month period of complete abstinence before registration on a liver transplantation waiting list is not mandatory, although intermittent alcoholic abuse before transplantation should be an exclusion factor. Liver transplantation must be proposed based on the severity of liver failure, as assessed by pronostic scores. It must be rapidly discussed following an acute episode of decompensation, in the absence of a significant improvement despite adequate medical therapy. It must also be discussed for long-term abstinent patients, with an apparently stabilized cirrhosis, but with an important decrease of the functional liver mass. The evaluation of the functional liver mass is based upon the Child-Pugh score, associated with the results of metabolic liver function tests, the measurement of the hepatic volume and the severity of portal hypertension.

Hepatitis, Alcoholic↗

Endoscopic stenting for pain relief in chronic pancreatitis: results of a standardized protocol.

BACKGROUND: Pancreatic endoscopic stenting aims to relieve abdominal pain due to chronic pancreatitis. Optimal treatment modalities and post-treatment effects have still to be determined. The object of this study was to investigate the results of a standardized protocol of endoscopic stenting. METHODS: Twenty-three patients with abdominal pain due to chronic pancreatitis and stricture of the distal main pancreatic duct were treated according to the following protocol: after balloon dilation of the stenosis, a 10F stent was placed into the main pancreatic duct and then exchanged every 2 months, the total duration of drainage being 6 months. RESULTS: Use of analgesics could be discontinued in 17 patients (74%) on termination of drainage, and in 12 patients (52%) 1 year later. These results were significantly associated with reduction of main pancreatic duct diameter and resolution of stricture, but were not influenced by abstinence from alcohol and pancreatic enzyme supplementation. CONCLUSIONS: Pancreatic duct stenting results in short-term clinical improvement in patients with chronic pancreatitis and proximal main pancreatic duct stricture. Persistence of advantageous clinical results is to be expected in 50% of cases and when strictures have resolved.

Abdominal Pain↗

[Mid-term failure of balloon dilatation treatment of antral stenosis induced by caustics].

We report the case of an antral stricture following lye ingestion. The patient was treated by 3 dilations using a through-the-scope balloon dilator, initially with good results. One year later, the recurrence of the symptoms led to 2 other sessions of dilation without success and a partial gastrectomy was performed. The intensity of the gastric wall fibrosis on the surgical specimen, probably responsible for major motor impairment, accounts for the discordance between the good endoscopic result and the clinical failure. Endoscopic dilation of lye-induced gastric strictures could be a temporary alternative to surgical resection because the gastric wall fibrosis blemishes the long-term functional result.

Burns, Chemical↗

Hepatic involvement in hereditary hemorrhagic telangiectasia: clinical, radiological, and hemodynamic studies of 11 cases.

BACKGROUND: Hepatic involvement in hereditary hemorrhagic telangiectasia (HHT) is infrequent and poorly studied. The aim of this study was to describe the clinical, radiological, and hemodynamic patterns of this involvement. METHODS: Eleven consecutive patients with HHT and hepatic involvement observed within 12 years were retrospectively studied. They were 8 females and 3 males, mean age, 47. RESULTS: The patients presented with heart failure (4 cases), hepatomegaly and murmur of the right hypochondrium (7 cases), and digestive hemorrhage (6 cases). Eight patients had anicteric cholestasis. Celiac angiography showed a dilated hepatic artery in 8 cases, disseminated intrahepatic telangiectasias in 10, and early opacification of the hepatic veins in 7. Liver dynamic computed tomography (CT) scan performed in 7 patients allowed the diagnosis of liver involvement in each case. Hemodynamic studies were performed in 5 patients. A left-to-right intrahepatic shunt was proven in the 5 patients. Shunt output was estimated between 25% and 58% of cardiac output. Mild pulmonary hypertension was observed in the 5 cases. CONCLUSIONS: Diagnosis of liver involvement in HHT can be made by dynamic CT scan or celiac angiography. The main feature of this involvement is high output heart failure due to left-to-right intrahepatic shunt. Thus, right-heart catheterization is necessary in these patients to confirm and evaluate the shunt.

Angiography↗

[Veno-occlusive disease after liver transplantation. Association of acute cellular rejection and toxicity of azathioprine].

Azathioprine vascular hepatotoxicity has been described mainly after renal transplantation. We report a new case in a patient who developed veno-occlusive disease of the liver 3 weeks after liver transplantation; regression of lesions were observed after discontinuation of azathioprine therapy. In this case, azathioprine hepatotoxicity may have been enhanced by a previous episode of severe, acute rejection prevailing in the hepatic veins. After liver transplantation, the diagnosis of azathioprine hepatotoxicity is difficult but should be suspected in the presence of non-inflammatory small hepatic veins lesions. Early withdrawal of the drug is mandatory for complete recovery.

Acute Disease↗

[Pediatric liver transplantation and related live donor. Technical and ethical considerations].

With improved results of liver transplantation, the number of candidates is increasing. However the scarcity of suitable grafts from cadaveric donors remains a limitation. In spite of the use of full size or reduced size grafts or partial grafts from split livers, some children still die while waiting for liver transplantation. We describe a successful orthotopic liver transplantation in a 10 months old female using the left lateral lobe (segments II and III) from her 27 years old father. The child suffered from biliary atresia, her condition was deteriorating with intractable ascites and increasing jaundice. The father asked us to give a part of his own liver to his daughter. The concept of this innovative therapy had already been submitted to a research-ethics consultation which gave us favorable conclusions. After careful donor evaluation, the left lateral lobe was harvested on July 22, 1992, including the left hepatic artery, left portal vein and left hepatic vein; hepatic artery for segment IV, which arose from the right structures, was preserved, The graft was immediately transplanted orthotopically after recipient total hepatectomy with inferior vena cava preservation. Cold ischemia time was 1 hour and 45 minutes, revascularization of the graft was homogeneous from the very beginning and its early function was excellent. Thirteen days after the operation, the donor was discharged in good condition. The child was reoperated at day 9 for a small biliary leak originating from the cut surface of the liver. After resolution of an episode of rejection and an intra-abdominal abscess, the child was discharged in good health with normal liver function 1 month post-transplant.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗

Liver transplantation for erythropoietic protoporphyria. Report of a new case with subsequent medium-term follow-up.

We report a new case of successful liver transplantation in a 36-year-old patient with terminal hepatic failure due to erythropoietic protoporphyria. Data regarding protoporphyrin levels in erythrocytes and feces, before and after transplantation, seem to indicate that in this case protoporphyrin overproduction was in part due to liver synthesis. Four years after surgery, the patient is completely free of skin photosensitivity. His liver function tests are normal; there are no visible protoporphyrin deposits or ultrastructural abnormalities in his new liver. However, recurrence of the disease in the long term cannot be excluded, since erythrocyte protoporphyrin levels remained elevated after liver transplantation.

Adult↗