Histologic features of the liver in insulin resistance-associated iron overload. A study of 139 patients.

The aim of the present study was to describe histologic features of the liver in insulin resistance-associated hepatic iron overload (IR-HIO), defined as the association of metabolic disorders and hepatic iron overload. We included 139 patients in the study on the basis of one or more metabolic disorders and liver iron overload unrelated to usual causes. Liver biopsy specimens were reviewed, and histologic data were compared with those of a previously published, well-defined population with genetic hemochromatosis. Iron overload was characterized by a mixed pattern with iron deposits in hepatocytes and sinusoidal cells. Steatosis was present in 59.7% of patients with inflammation in 32.4% of cases. Periportal fibrosis was found in 67.4% of patients. These patients were older, had higher sinusoidal iron scores, and had a higher prevalence of steatosis and inflammation than patients without fibrosis. Iron overload in IR-HIO was histologically different from that in genetic hemochromatosis.

In patients with cirrhosis, serum albumin determination should be carried out by immunonephelometry rather than by protein electrophoresis.

OBJECTIVE: Serum albumin is a key parameter for prognosis in cirrhosis. We compared levels of serum albumin determined by both protein electrophoresis and immunonephelometry, with special reference to the Child-Pugh classification. DESIGN AND METHODS: One hundred and thirty-one patients, including 39 with cirrhosis, were included prospectively during 2 months. The aetiology of cirrhosis was mainly alcoholism (67%) and hepatitis C virus (HCV) (18%). Serum albumin was determined simultaneously by electrophoresis (Hydrasys SEBIA following protein determination by the biuret reaction) and by immunonephelometry (BECKMAN Nephelometer). Values were compared by non-parametric tests. RESULTS: For the whole population, electrophoretic and immunonephelometric values correlated (p = 0.85; P < 0.0001), but electrophoresis significantly overestimated serum albumin by a median 1.6 g/l (P < 0.0001) with a large spread in values (range, -3.9 to 12.7). Median overestimation in cirrhosis was 2.6 g/l (P < 0.0001; range, -2.0 to 10.2) and 1.0 g/l (P < 0.0001; range, -3.9 to 12.7) in patients without cirrhosis (difference, P < 0.02). For 6/39 (15.4%) patients with cirrhosis, this overestimation led to an underestimation in the Child-Pugh classification. CONCLUSION: In our experience, electrophoresis can lead to serum albumin values which are significantly different compared to those obtained by immunonephelometry. This discrepancy may lead to an incorrect Child-Pugh classification. Therefore, in the follow-up of cirrhotic patients, serum albumin should be determined by immunonephelometry.

Interferon and ursodeoxycholic acid combined therapy in chronic viral C hepatitis: controlled randomized trial in 203 patients.

AIMS: This prospective randomized trial was carried out in order to determine whether the long-term administration of ursodeoxycholic acid after discontinuation of interferon had any beneficial effect on the clinical course of hepatitis C virus infection. METHODS: Enrolled in the study were 203 patients with chronic active hepatitis C. They were all given: interferon alpha-2a (3 MU subcutaneously thrice a week) and ursodeoxycholic acid (10 mg/kg/day) for 9 months. At month 9, biochemical responders only were randomized into ursodeoxycholic acid treatment or placebo for 12 additional months (double blind study). RESULTS: At the end of interferon therapy, 71 patients (37%) were virological responders and 107 (56%) patients were biochemical responders and were randomized: 54 into the ursodeoxycholic acid group and 53 into the placebo group. Sustained response was evaluated 12 months after withdrawal of interferon. Sustained biochemical and virological responses were, respectively, 30% and 22% in the ursodeoxycholic acid group and 46% and 32% in the placebo group, which did not significantly differ. Histological evolution of fibrosis and necrotic inflammatory activity were similar in the two groups. CONCLUSION: Continuation of ursodeoxycholic acid therapy after withdrawal of interferon in patients with end-of-treatment response did not result in any significant improvement either in the maintenance of response to interferon or in liver histology.

Major liver resections without vascular clamping: retrospective study of 84 cases.

BACKGROUND/AIMS: The question as to whether vascular clamping aggravates mortality and morbidity of major liver resection was investigated in this study. Major liver resection with vascular clamping for parenchyma transection has mortality between 0 and 5%, and higher morbidity reaching 47% with healthy liver in recent report. METHODOLOGY: Eighty-four major liver resection without vascular clamping were carried out between January 1986 to December 1996 were reviewed. There were 57 men and 27 women with average age of 58.2 (12.2) years old. Indications of resection were adenoma (4.8%) angioma (11.9%) focal nodular hyperplasia (1.2%) hematoma (1.2%) metastases (60.7%) hepatocellular carcinoma (14.3%) and cholangiocarcinoma (5.9%). Resections used ultrasonic dissector (Sonoca) with intraoperative ultrasonography were right hepatectomy in 56 cases extended right hepatectomy in 10 cases left hepatectomy in 17 cases and middle hepatectomy in 1 case. Remnant liver was cirrhotic in 3 cases. RESULTS: Three patients died (3.5%) and the rate of major complications were 11.2%. 46 patients (54.8%) had no blood transfusion. The mean of blood transfusion was 1.5 (2.7) units. The mean of operative length was 286.23 (63.3) minutes and the mean hospital stay was 15.8 (8.1) days. Liver function tests are same with the others authors at day 1, 4 and 7 after operation with return to normal value after 1 week. CONCLUSION: In major liver resection, vascular clamping is not always necessary.

[A case of digestive epilepsy with late diagnosis: a disease not to be disregarded]. / Un cas d"épilespie digestive de diagnostic tardif: une pathologie à ne pas méconnaître.

Digestive epilepsy is a rare disease, poorly recognized by gastroenterologists. Its diagnosis requires a compatible clinical presentation, the absence of concomitant organic digestive disease, and an effective and long-lasting response to specific anticonvulsant agents. We report a case of digestive epilepsy due to a meningioma of the right parietal lobe in a 79-year-old woman suffering from headaches, vertigo, sweating and abdominal pain for at least 14 years. Initial diagnosis was irritable bowel syndrome. A meningal syndrome led to neurological work-up showing cerebral meningioma. The recurrent paroxysmal abdominal pain was interpreted as manifestations of digestive epilepsy, and effective and long-lasting treatment was obtained with carbamazepine. After analysis of the determining elements in this case, the epidemiology, pathophysiology, diagnostic work-up, therapy, and differential diagnosis of digestive epilepsy are discussed.

[Primary T-cell lymphoma of the common bile duct]. / Lymphome T primitif de la voie biliaire principale.

Involvement of the gastrointestinal tract is frequently reported among the extranodal sites of non-Hodgkin's lymphoma, but primary lymphoma of the common bile duct is extremely rare. We report the case of a 29-year-old man who presented with obstructive jaundice, leading to the diagnosis of high-grade primary non Hodgkin's T-cell lymphoma, originating from the extrahepatic biliary tract, and confirmed by endosonography and magnetic resonance cholangiography. This patient was treated by sequential chemotherapy without resection and remained in complete remission after one year.

[Importance of liver puncture biopsy and endoscopic retrograde cholangiography in patients with chronic anicteric unexplained cholestasis. A retrospective study in 79 patients]. / Intérêt de la ponction-biopsie hépatique et de la cholangiographie rétrograde endoscopique chez les malades ayant une cholestase chronique anictérique inexpliquée. Etude rétrospective chez 79 malades.

AIM: To determine the diagnostic value of systematic liver needle biopsy and endoscopic retrograde cholangiography in patients with unexplained chronic anicteric cholestasis. METHODS: Seventy nine patients presented with anicteric cholestasis for over 6 months as defined by: a concomitant increase in at least 2 of 3 cholestatic enzymes (GGT, alkaline phosphatase, 5'nucleotidase); a low cytolytic ratio (ALT/AP (xN/xN) < or = 5); and negative test results (normal ultrasound scan; no antimitochondrial antibodies, viral, drug-induced, or toxic hepatitis, or known ulcerative cholitis). Based on liver biopsy and endoscopic retrograde cholangiography, 5 groups were determined; group A: normal liver biopsy and endoscopic retrograde cholangiography; group B: primary sclerosing cholangitis with histological biliary lesions; group C: primary sclerosing cholangitis with normal histology; group D: histologic biliary lesions alone; group E: other (aspecific histologic lesions, isolated anomalies of intrahepatic bile ducts on endoscopic retrograde cholangiography). RESULTS: Diagnosis of cholestasis was fortuitous in 43% of cases. Group A: 5 patients had normal liver biopsy and endoscopic retrograde cholangiography; group B (10 patients): 5 with destructive cholangitis, 5 with degenerative cholangitis, associated with portal fibrosis in 90%; group C: none of the patients had primary sclerosing cholangitis with normal histology; group D: 39 patients {idiopathic ductopenia (1), Caroli's disease (1), benign recurrent cholestasis (1), regenerative nodular hyperplasia (4), destructive cholangitis without ductopenia (7), degenerative cholangitis (15), ductular proliferation (10)}; group E: 24 patients with aspecific histologic lesions, and one patient with isolated anomalies of the intrahepatic bile ducts on endoscopic retrograde cholangiography. CONCLUSIONS: In the present population: a) 13% presented with intense cholangitis and primary sclerosing cholangitis on endoscopic retrograde cholangiography; b) 49% presented with various histologic biliary lesions without primary sclerosing cholangitis. We conclude that in chronic anicteric cholestasis of unexplained origin, first choice work-up should include liver biopsy, and endoscopic retrograde cholangiography should only be performed when intense histologic cholangitis is observed.

[Epidemiology of hepatitis C virus infection in 1,304 HCV positive patients: variations according to the origin of transmission and year of diagnosis]. / Epidémiologie de l'infection virale C chez 1,304 sujets VHC positif. Variations en fonction du mode de contamination et de l'année du diagnostic.

UNLABELLED: The evolution of epidemiological data on hepatitis C virus infection is poorly documented and thus the impact of screening is difficult to evaluate. AIM: To study epidemiological variations based on the origin of transmission and the year of diagnosis of hepatitis C virus infection. METHODS: The files of all 1304 patients seen in the hepatology unit of the Rennes University Hospital were analyzed (retrospectively before and prospectively after October 1995) in relation to epidemiological features. RESULTS: Despite widespread screening which is the source of 60% of the diagnoses, the total number of new cases of hepatitis C infection per year has not increased. Compared to patients diagnosed in the first years following the discovery of the virus, patients recently identified were younger (42 +/- 14 years) and frequently drug addicts (40%). Aminotransaminases were normal in 20% of cases. The frequency of cirrhosis has declined (17%). There has been a decrease in the proportion of patients who undergo liver biopsy (50%) and treatment with interferon (one third of patients). CONCLUSIONS: The impact of screening on the number of newly treated patients seems to be lower than previously predicted.

Respective value of alkaline phosphatase, gamma-glutamyl transpeptidase and 5' nucleotidase serum activity in the diagnosis of cholestasis: a prospective study of 80 patients.

We studied the value of alkaline phosphatase (AP), gamma-glutamyl transpeptidase (GGT), and 5'-nucleotidase (5'-NU) activities in the diagnosis of intrahepatic (IHC) versus extra-hepatic cholestasis (EHC). Eighty patients were included prospectively. All presented with cholestasis as defined by a concomitant increase in at least two of three cholestatic enzymes (AP, GGT, 5'-NU), a low cytolytic ratio (alanine aminotransferase/AP [xN/xN] < or = 5), and no evidence for associated liver tumor. We compared 43 patients with IHC due to chronic liver disease to 37 patients with EHC due to main bile duct obstruction. Fasting blood samples for activity determination (AP, GGT, 5'-NU) were taken before performing liver biopsy in cases of IHC and before endoscopic or surgical management in cases of EHC. Enzyme activities were compared using univariate and multivariate analysis. AP (276 IU/L [35-3,140] vs. 123 IU/L [37-699]: p < 0.0001), GGT (595 IU/L [98-5,200] vs. 211 IU/L [38-925]; p < 0.0001), and 5'-NU (32 IU/L [10-142] vs. 16 IU/L [4-107]: p < 0.0003) were significantly higher in EHC when compared to IHC. Only in GGT and 5'-NU activities were independent variables significantly linked to the mechanism of cholestasis. In IHC, the ratio GGT/5'-NU (xN/xN) was significantly lower than in EHC (2.8 [0.7-7.2] vs. 3.7 [1.8-10.5]: p < 0.006). A threshold of GGT/5'-NU < 1.9 had a sensitivity of 40% and a specificity of 100% for the diagnosis of IHC. Although such hepatobiliary enzymes cannot be regarded as diagnostic, they can provide useful information to orientate the clinician in the diagnosis of cholestasis.

Rectal adaptation to distension in patients with overt rectal prolapse.

BACKGROUND: High recovery rates of continence are observed after surgical procedures for rectal prolapse. Increases in rectal compliance but no obvious rise in anal pressures have been reported. The authors' hypothesis was that decreased rectal adaptation to distension may contribute to incontinence in patients suffering from overt rectal prolapse. METHODS: This was a prospective study conducted in 20 consecutive incontinent patients suffering from overt rectal prolapse with no mucosal change (two men and 18 women; mean(s.e.m.) age 50(3) years). They were compared with 20 age- and sex-matched patients with incontinence without rectal prolapse and ten age- and sex-matched healthy volunteers observed during the same period. The subjects were submitted to phasic isobaric distension of the rectum with an electronic barostat. Anal pressures, perception scores and rectal volumes were recorded at six different preselected pressures. RESULTS: Compared with healthy subjects, maximum rectal volumes (mean(s.e.m) 98(6) versus 167(11) ml; P= 0.005), volumes related to compliance (56(5) versus 100(9) ml; P= 0.004) and tone (41(3) versus 67(4) ml; P = 0.003) were decreased significantly in the rectal prolapse group. Prolapse and incontinence groups did not differ significantly with respect to rectal adaptation for all three parameters and steps of distension considered. CONCLUSION: Patients suffering from overt rectal prolapse had markedly impaired rectal adaptation to distension which may contribute to incontinence.

Value of MR cholangiography in the diagnosis of obstructive diseases of the biliary tree: a study of 58 cases.

OBJECTIVE: The aim of this study was to evaluate magnetic resonance cholangiography (MRC) in the diagnosis of biliary tree obstruction. METHODS: Fifty-eight consecutive patients underwent MRC (GYROSCAN ACS II 1.5 Tesla, TSE T2 axial/coronal-MIP sequences) for clinical and biochemical signs of main bile duct obstruction. MRC images were interpreted by two radiologists and consensus was established according to presence or absence of main bile duct dilation, choledocholithiasis, and malignant or benign stricture. MRC was compared to a final diagnosis established by ultrasound and CT in 19 cases, endoscopic retrograde cholangiopancreatography (ERCP) in 25, intraoperative cholangiography and exploration in 14, and clinical, biochemical, and histological presentation when relevant. Included were single or multiple choledocholithiasis (28, including 11 < or = 3 mm), malignant (10) and benign (12) strictures, and intrahepatic cholestasis (9). RESULTS: Overall, MRC was sensitive (94%) and specific (92%) in detecting main bile duct dilation and choledocholithiasis (86 % and 97 %), but was less sensitive (64%) for small stones < or = 3 mm. Sensitivity for stones > 3 mm was 100%. For benign and malignant strictures, MRC was less sensitive (67% and 80%) but remained specific (98% and 96%). In the detection of normal main bile duct, MRC was highly sensitive (100%) and specific (94%). Diagnostic accuracy ranged from 91% to 98%. CONCLUSION: MRC appears to be specific for choledocholithiasis and sensitive except for small stones. Results for biliary stricture are less satisfactory, but remain specific. Our data confirm that MRC can be useful in the diagnostic workup of main bile duct obstruction.

Venesection therapy of insulin resistance-associated hepatic iron overload.

BACKGROUND/AIMS: The association of hepatic iron overload with metabolic disorders has been coined as the insulin resistance-associated hepatic iron overload syndrome (IR-HIO). METHODS: Fifty-six IR-HIO patients were phlebotomized either weekly (n = 14) or bimonthly (n = 42) and compared with C282Y homozygotes and with ten IR-HIO patients treated by a low calorie diet alone. RESULTS: In venesected patients, the median amount of mobilized iron was 0.6 g in 2.8 months in females and 1.8 g in 5 months in males. Mobilized iron did not differ depending on the frequency of venesections or HFE genotype. When compared with C282Y homozygotes, IR-HIO patients had a similar amount of mobilized iron, but three-fold serum ferritin levels. The presenting symptoms (chronic fatigue and/or polyarthralgias) improved in 6/7 patients. Phlebotomies were well tolerated. In patients treated by a low calorie diet, serum ferritin levels remained stable. CONCLUSIONS: In IR-HIO patients, body iron stores are significantly increased, overestimated by serum ferritin, not modified by a low calorie diet, and safely removed by phlebotomies. Based on these data and on studies indicating that iron excess is associated with increased risk for hepatic fibrosis, cancer and cardiovascular disorders, venesection therapy can be recommended in IR-HIO patients.

Dual-energy CT in the diagnosis and quantification of fatty liver: limited clinical value in comparison to ultrasound scan and single-energy CT, with special reference to iron overload.

BACKGROUND/AIMS: It has been suggested that dual-energy CT could differentiate irregular fatty liver from other hypodense lesions. We compared dual-energy CT to ultrasound scan and single-energy CT in the diagnosis and quantification of fatty liver, with special reference to iron overload. METHODS: Twenty-seven patients were included according to ultrasound: fatty liver (n=16) and normal liver (n=11). Single and dual-energy CT were performed. Attenuation measurements of hepatic lobes and control tissues were taken at 140 kV and 80 kV CT-guided liver biopsy was done in fatty liver patients, the degree of infiltration was estimated, and the histologic iron overload determined (iron overload, n=11; iron-free, n=5). RESULTS: The mean changes in attenuation for the right hepatic lobe were: normal liver: -0.8 (ns); iron overloaded fatty liver: 1.5 (ns); and iron-free fatty liver: 7.7 (p<0.0053). A spleen-liver attenuation differential threshold of 12H (140 kV, single-energy CT) and a right hepatic lobe 140 kV to 80 kV attenuation differential threshold of 9 H (dual-energy CT) were specific for fatty liver. Histology confirmed all cases of fatty liver diagnosed by ultrasound, independently of iron overload. Ultrasound did not differentiate cases of irregular from diffuse fatty liver detected on CT. Iron overload produced a masking effect in CT, decreasing its sensitivity: fatty liver was diagnosed in 67% of cases by single-energy CT and in 20% by dual-energy CT. Degree of fatty infiltration correlated with single-energy CT. CONCLUSIONS: Ultrasound diagnosed fatty liver best. Single-energy CT quantifies fatty infiltration, and best differentiates the irregular from the diffuse forms. Dual-energy CT is limited by poor sensitivity, especially in iron overload.

Fecal incontinence with normal anal canal pressures: where is the pitfall?

OBJECTIVE: One third of subjects who suffer from fecal incontinence are found to have values within the normal range when anal manometry is performed. For these patients, one hypothesis is that impaired rectal adaptation to distension may occur. The aim of our study was to analyze anorectal responses to rectal isobaric distension in this population. METHODS: This was a prospective study conducted in 51 consecutive incontinent patients (45 female, six male) divided into two groups according to their functional anal state: absence (19 patients aged 55 +/- 6 yr) or presence of manometric anal weakness (32 patients aged 59 +/- 2 yr). The subjects were submitted to two randomized modes of rectal isobaric distension (tonic, phasic) with an electronic barostat. Anal pressures, perception, and volumes of the rectum were recorded at six different preselected pressures. RESULTS: As compared with those having anal weakness, patients with no anal weakness retained higher mean pressures at both upper (36.9 +/- 2.2 vs 22.9 +/- 1.4 mm Hg; p = 0.01) and lower parts (41.0 +/- 2.0 vs 23.3 +/- 1.4 mm Hg; p = 0.002) of the anal canal, similar perception scores, but much lower rectal volumes (68.5 +/- 5.5 vs 121.8 +/- 7.0 ml; p = 0.008) in response to rectal isobaric distension. CONCLUSION: A decrease in rectal adaptation could be involved in fecal leakage in patients with no anal manometric weakness.

Magnetic resonance iron-free nodules in genetic hemochromatosis.

OBJECTIVE: In hemochromatosis, areas of normal hepatic magnetic resonance (MR) signal intensity indicate the presence of iron-free-nodules, which are strongly suspected of being neoplastic. The goal of the study was to define the prevalence and the nature of these iron-free MR nodules at the time of diagnosis in 116 patients included in a prospective study assessing the accuracy of MR imaging (MRI) in the quantification of liver iron overload. METHODS: Seventy-nine of the 116 patients had homozygous hemochromatosis on a phenotypic basis. Fifteen-millimeter-thick contiguous slices were performed using T1- and T2-weighted gradient echo sequences with a 0.5 Tesla magnet. RESULTS: Six of 79 homozygous hemochromatotic patients had one or more MR iron-free nodules. Five of the six patients proved to have malignant tumors. Four of six iron-free nodules were hepatocellular carcinoma (5% in the hemochromatosis group and 17.5% in hemochromatotic patients with severe fibrosis). CONCLUSIONS: The present data confirm the high prevalence of liver cancer at the time of diagnosis, mainly in cirrhotic patients greater than 45 years of age, and indicate that, when performing MRI for liver iron quantification, a complete hepatic MRI examination is preferable to a simple signal measurement in patients at risk for hepatocellular carcinoma.

A pilot study of iron depletion as adjuvant therapy in chronic hepatitis C patients not responding to interferon.

The aim of this study was to assess the efficacy of iron depletion obtained by phlebotomy to enhance interferon response in 11 patients who had failed to respond to a standard 3-month interferon treatment. Despite a significant effect on serum aminotransferase levels, there was no effect on viremia, and iron depletion was unable to trigger interferon response.

Noninvasive prediction of fibrosis in C282Y homozygous hemochromatosis.

BACKGROUND & AIMS: The diagnosis of hemochromatosis is now possible for C282Y homozygous patients using noninvasive molecular genetic tests. The aim of this study was to define noninvasive factors predictive of severe fibrosis (bridging fibrosis or cirrhosis) to avoid unnecessary liver biopsies in such patients. METHODS: Clinical and biological data were recorded at the time of diagnosis in 197 French C282Y homozygous patients, 52 (26%) of whom had severe fibrosis. Variables significantly linked to severe fibrosis using univariate analysis were entered into a multivariate stepwise analysis. These variables were combined to obtain a simple index allowing for prediction of severe fibrosis. RESULTS: Serum ferritin, hepatomegaly, and serum aspartate aminotransferase were selected using multivariate analysis. Their combination applied to the 96 patients with ferritin level of