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Purpose: The aim of this study was to evaluate the role of magnetic resonance cholangiography (MRC) in the detection of biliary complications following orthotopic liver transplantation (OLT)., Materials and Methods: Seventy-eight transplant patients with clinically suspected biliary complications were evaluated with 1.5-T magnetic resonance imaging (MRI) using a surface coil. All patients were imaged with the following sequences: axial T1-weighted and axial and coronal T2-weighted, 2D spin echo (SE) breath-hold radial cholangiography, and coronal 3D single-shot turbo spin echo (SS-TSE) with respiratory triggering. Patients with negative MRI underwent clinical and sonographic followup. When biliary complications were present, diagnostic confirmation was obtained by endoscopic retrograde cholangiopancreatography (ERCP) (n=13), percutaneous transhepatic cholangiography (PTC) (n=20), ultrasonography (n=10) or computed tomography (CT) (n=2). In 11 cases, surgical confirmation was also obtained., Results: MRC detected biliary complications in 44/78 patients, in particular, 42 biliary strictures (37 anastomotic and five intrahepatic), 40 of which were confirmed by other imaging modalities. In 25/37 cases of anastomotic stricture, preanastomotic dilatation of the biliary tract was also demonstrated. Other MRC-detected biliary complications were biliary sludge (n=4), biloma (n=5), and biliary stones (n=3). In four cases, PTC revealed biliary complications that had not been detected with MRC (false negative results). In two cases, MRC showed unconfirmed strictures of the intrahepatic ducts and biliodigestive anastomosis (false positive results). The sensitivity, specificity, positive (PPV) and negative (NPV) predictive values and diagnostic accuracy of MRC were 93.5%, 94.4%, 96.7%, 89.5% and 93.9%, respectively., Conclusions: Our results confirm that MRC is a reliable technique for depicting biliary anastomoses and detecting biliary complications after OLT. The high diagnostic accuracy of MRC indicates that this examination should be routinely employed in all OLT patients with clinically suspected biliary complications.

Objective: To describe the management and outcome after endoscopic treatment of 23 patients with post-operative benign bile duct stricture (BBDS) managed in Authors' Department from 1991 to 2000., Background Data: The management of the postoperative bile duct strictures remains a challenge for even the most skilled biliary tract surgeon and endoscopist. The 1990s saw a dramatic increase in the incidence of bile duct strictures from the introduction and widespread use of laparoscopic cholecystectomy. The management of these injuries, short-term outcome and follow-up have been reported., Methods: Data were collected retrospectively on 23 patients treated in the Service of Diagnostic and Operative Endoscopy of the Operative Unit of General and Thoracic Surgery (Policlinico Paolo Giaccone, Palermo, Italy) with BBDS between 1991 and 2000. All patients underwent ERCP (endoscopic retrograde cholangiopancreatography). Follow-up and pharmacological therapy post-ERCP were conducted by scheduled medical audit., Results: Of the 23 initial patients, 20 undergoing endoscopic stenting (3 with complete transaction were invited to surgery), 16 had completed treatment with symptoms resolution (mean follow-up of 70 months). One patient died of reason unrelated to biliary tract disease before the completion of treatment. Seven had not completed treatment. Of 16 patient who had completed treatment, 13 were considered to have a successful outcome without the need of follow-up invasive, diagnostic or therapeutic interventional procedures. Overall, a successful outcome, was obtained in 65% of patients, including those requiring a secondary procedure for recurrent strictures., Conclusions: Postoperative bile duct strictures remain a considerable surgical challenge. Management with endoscopic cholangiography to delineate the postoperative anatomy and to place biliary stents, to solve the symptoms, is associated with a successful outcome in up of 65% of patients, in well experienced team. Endoscopic treatment should be the initial management of choice for postoperative bile duct stenosis, as a real alternative to surgical reconstruction: because his failure will not compromised the following surgical treatment prior endoscopic treatment does not preclude surgery), whereas endoscopic treatment is impossible one a Roux-en-Y loop has been constructed

Primary sclerosing cholangitis (PSC) is an idiopathic chronic inflammatory condition affecting intra- and extra-hepatic biliary system. The aim of this study is to stress the importance of cholecystectomy in patients with PSC. Consideration should be given to performing a cholecystectomy in PSC patients with gallbladder adenomyomas or calculi, even asymptomatic; this happens in approximately 15% of cases.

Purpose: To compare 2D single-shot Fast Spin-Echo (FSE) and two 3D FSE MR cholangiopancreatography (MRCP) sequences with different slice thickness in the evaluation of normal and abnormal biliary and pancreatic duct systems., Materials and Methods: Thirty-two consecutive patients, both with normal biliary and pancreatic ducts (n=14) and with different biliary and/or pancreatic duct disease (n=18) underwent MRCP with a 1.5 T superconductive magnet. One 2D single-shot FSE and two 3D FSE MRCP sequences with different slice thickness (1.6 mm and 3 mm) were performed in each patient. Images were analysed with regards to: artefacts (0=none, 1=minimal, 2=present but not affecting the diagnostic evaluation, 3=present and affecting the diagnostic evaluation), image quality (0=non-diagnostic, 1=poor, 2=fair, 3=good, 4=excellent), duct conspicuity (0=not-visible, 1=poor, 2=good, 3=excellent), diagnostic confidence (possible presence of dilatations, stones and stenoses)., Results: Artefacts were rarely present, without significant differences among the three sequences. The 2D single-shot FSE sequence provided a significantly better image quality and significantly better conspicuity of the intrahepatic and pancreatic ducts in comparison to both the 1.6-mm and 3-mm thickness 3D FSE sequences. The three sequences yielded identical results in the detection of 17 cases of dilatation and 10 cases of stenosis as well as in the evaluation of their degree. Stones in the biliary tree were detected in 6 cases with the 2D single-shot FSE sequence, in 5 cases in the MIP images of the 3D FSE sequence with slice thickness of 1.6 mm and in 4 cases in the MIP images of the 3D FSE sequence with slice thickness of 3 mm. The diagnostic confidence did not show statistically significant differences among the three sequences., Conclusions: The 2D single-shot FSE sequence proved to be superior to the 3D FSE sequences in the evaluation of normal and abnormal biliary and pancreatic duct systems.

Liver regeneration has been studied in necrotic hepatitis of 21 rabbits infected with the haemorrhagic disease virus (VHD). Formalin fixed and paraffin embedded liver sections have been immunostained for the proliferation associated antigen PCNA (Proliferating Cell Nuclear Antigen-clone PC10) and counterstained with toluidine blue that enhances histologic recognition of mitoses. Hepatocyte and bile duct proliferative activity has been quantified, by means of image analysis, both as PCNA reactivity and mitotic activity. The results, compared with a semiquantitative estimation of liver necrosis, showed a positive correlation between hepatocyte proliferative activity and liver necrosis, both in acute and subacute hepatitis. In the chronic phase a residual proliferative activity appeared in bile duct cells.

Multiple bile duct hamartomatosis of the liver or so-called von Meyenburg's syndrome, is an infrequent disease related to a dysembryogenic error. The authors discuss clinical features, diagnostic methods and possible related pathologies. Data reported in the literature are also received.

Tomographic study of the bile ways following a second dose of oral contrast medium led in 60 patients to a considerable diagnostic gain. Oral cholecystographic examination failures fell and at the same time the field of indication for i.v. cholangiography was restricted.

Nine patients had been surgically treated for extrahepatic biliary atresia from 1974 to 1982. The analysis of the hepatic specimens obtained during the surgical exploration revealed a wide spectrum of histopathologic lesions. In 3 patients we found severe Giant-cell transformation, while in the other 6 it was not possible to ascribe the histopathologic picture to a univocal pathogenesis. Comparing our results to the reports of other Authors we believe biliary atresia can not be explained by a single pathologic mechanism. The obstruction of the extrahepatic bile ducts might be the common morphologic denominator of different pathologic entities, from each of them it depends a different evolution of the hepatic lesions and a different survival after Kasai's operation.