- Pictorial Review
- Open Access
Interventional radiology in the management of benign biliary stenoses, biliary leaks and fistulas: a pictorial review
© The Author(s) 2012
- Received: 4 September 2012
- Accepted: 31 October 2012
- Published: 24 November 2012
Benign biliary postoperative stenoses and biliary leaks and fistulas usually occur due to injury after laparoscopic cholecystectomy, gastric or hepatic resection, bilio-enteric anastomoses and after liver transplantation. In most of the cases a new surgical intervention is not possible and the percutaneous trans-hepatic approach is of paramount importance in the diagnosis and treatment of the problem. This review aims to highlight the spectrum of percutaneous cholangiographic findings and methods of treatment of postoperative benign biliary stenoses and biliary leaks and fistulas. In the case of stenosis, dilation of the narrow tract is the usually the first approach, whereas in the case of leaks and fistulas bile diversion with drainage is usually attempted in order to seal the fistulous tract. However, a great variety of combination of materials and techniques may be used on a “case-by case” approach
A selection of cases of benign biliary postoperative stenoses and biliary leaks and fistulas that were managed percutaneously are presented and the most common lines of approach are discussed.
The imaging spectrum of percutaneous treatment of benign biliary postoperative stenoses and biliary leaks and fistulas is presented in order to aid interpretation and management with image guided procedures.
• Treatment of benign biliary stenosis is performed with cholangioplasty and stents.
• The main goal of fistula treatment is to divert the bile away from the site of bile wall defect.
• Drain collection and tract embolisation are the other options for bile leak percutaneous treatment.
- Biliary tract disease
- Postoperative biliary injury
- Benign biliary strictures
- Bile leaks and fistula
- Biliary drainage
Interventional radiology (IR) has an established role in the diagnosis and management of patients with benign biliary disease. Postoperative benign biliary stenoses and/or biliary leaks and fistulas may be effectively treated with dilatation of the narrowed anastomotic tract or bile diversion away from the site of defect in the bile wall. A large variety of combination of dilatation and drainage may be used on a “case-by-case” basis with the use of various techniques and materials. Purpose of this pictorial review is to highlight the general lines of approach and to show the range of imaging findings of the percutaneous treatment of postoperative benign biliary stenoses and biliary leaks and fistulas.
Postoperative benign biliary strictures may occur as anastomotic strictures after surgical bile duct repair or liver transplantation, strictures secondary to intraoperative injury (most commonly during laparoscopic cholecystectomy) or postoperative inflammatory strictures . Effective management is necessary in such cases in order to avoid serious consequences like liver function deterioration, cholangitis, jaundice, abscess formation and sepsis .
Endoscopic treatment is the optimal initial management for benign biliary strictures; however, the endoscopic approach is impossible for patients who have previously undergone bilio-digestive anastomosis  and may be very difficult in tight low biliary strictures . In such cases, percutaneous treatment with balloon dilation with or without long-term biliary drainage and bare or covered stent placement, have been suggested as possible alternatives [2, 4–8].
Biliary leaks and fistulas are also a common complication after liver and biliary surgery. Leaks and fistulas may take origin from various procedures like bilio-digestive anastomoses, bile or cystic duct stumps or other intraoperative bile duct injury [9, 10]. Despite reduction in mortality for hepatic surgery in the last 2 decades, bile leaks rates have not changed significantly. Most bile leaks from the intra-hepatic biliary tree are transient and managed conservatively by drainage alone or by endoscopic biliary decompression. Minimally invasive percutaneous techniques for the management of biliary leaks and fistulas include percutaneous bile collection drainage, percutaneous trans-hepatic biliary drainage, biliary leak site embolisation sclerosis, ablation of a leaking biliary segment and treatment with a covered stent.
The most frequent causes of benign strictures of the biliary tree can be related to postoperative injury not only after open or video-laparoscopic cholecystectomy (VLC) but also after gastric or hepatic resection, portacaval shunt and bilio-enteric anastomosis . Many factors, including inadequate exposure, congenital anomalies, obesity, hostile abdomen, acute pre-existing cholecystitis and bleeding, increase the rate of bile duct injury during cholecystectomy . In addition, thermic injuries to the ductal wall produced by the propagation of heat during electrocutting or electrocoagulation may produce a progressive stenosis more often localised at the level of the bifurcation .
Liver transplantation (OLT) can represent a cause of injury to the biliary system including leaks and strictures. Strictures may be localised at the level of the anastomosis, in the intra-hepatic portion or diffuse, as seen in cases of hepatic artery thrombosis with an incidence of 10 % as reported by Zoepf et al. . Moreover there is an increased incidence of subsequent diffuse biliary stenosis or “ischaemic cholangiopathy” in liver recipients. These patients can be treated either endoscopically or with radiological percutaneous approach with a success rate respectively of 100 % and 78 % . The treatment selection is correlated to the initial surgical procedure and to the accessibility to the lesion.
Biliary leaks are an abnormal passage or communication from the biliary system to another location, intra- or extra-hepatic, and most commonly follow gallbladder surgery but can result from ductal injury related to blunt or sharp trauma or iatrogenic injury (e.g. liver biopsy) . The most commonly accepted definition of a bile leak requires the presence of bile discharge from an abdominal wound and/or drain, with a total bilirubin level of >5 mg/ml or three-times the serum level, intra-abdominal collections of bile confirmed by percutaneous aspiration or cholangiographic evidence of dye leaking from the opacified bile ducts . Surgery for hydatid disease may also lead to internal biliary leaks, with a frequency between 4 % and 28 %, mainly when deeply located cysts and right lobe cysts are excised .
The incidence of bile leaks following liver resection varies from 2 % to 30 %  and depends on the type, extent and reason for liver resection, with higher risk for intra-hepatic cholangiocarcinomas . The risk of internal leak is higher after central hepatectomy involving segments IV, V and VIII, possibly due to drainage from aberrant right sided ducts draining into left duct.
The clinical presentation of postoperative benign biliary stenoses may be divided into an early and late phase. The early phase is usually secondary to an acute obstruction of the bile duct and becomes clinically evident with an increase jaundice and alteration of liver function tests. Fever and infection may not be present, but may appear later.
The clinical presentation of biliary leaks and fistulas is usually with abdominal pain and raised inflammatory markers in the immediate postoperative period .
Trans-abdominal ultrasound (US), computed tomography (CT) of the upper abdomen and magnetic resonance cholangio-pancreatography (MRCP) are the principal, non-invasive, imaging modalities in the evaluation of the liver parenchyma and the biliary tree.
MRCP is most frequently used in the case of a suspected stricture; the accuracy of MRCP versus the invasive endoscopic retrograde cholangio-pancreatography (ERCP) on the analysis of the type and site of obstruction is 76 % versus 72 % respectively .
In the case of bile leaks and fistulas, ultrasound and CT may help in the detection of the localised collections of bile or bile lying free in the peritoneal cavity. CT scanning may be used in conjunction with intravenous cholangiography (CT-IVC) to produce axial and three-dimensional images . This technique is very useful in the detection of stones and in the creation of virtual cholangiographic pictures and may be very valuable in defining sites of leaks as it has the functional dimension that conventional MRCP does not.
However, if a leak is suspected, the best way to prove it is with the use of an invasive cholangiogram, either endoscopic or percutaneous. A cholangiogram is a dynamic exam that is able to demonstrate the origin of the leak and to delineate the fistulous tract  and is useful in deciding the optimal management and the likelihood of success with conservative measures. The most frequent site of leak demonstrated cholangiographically is the cystic duct stump post-laparoscopic cholecystectomy . Radionuclide scans may also offer information in the case of bile leaks .
Biliary strictures and leaks are classified according to two widely used systems: the Bismuth classification, which is based on the location of stricture, and the Strasberg classification, which is based on the location of biliary leak [26, 27]. Bergman et al.  modified the Strasberg classification according to ERCP findings into four major types: Type A, leakage from cystic duct or peripheral hepatic radicles; Type B, leakage from a major bile duct; Type C, isolated ductal stricture; Type D, complete transection of the bile duct. Biliary leaks have been classified by Nagano et al.  into four types: Type A, minor leaks from small bile radicles on the surface of the liver; Type B, leaks from inadequate closure of the major bile duct branches on the liver’s surface; Type C, injury to the main duct commonly near the hilum; Type D, leakage due to a transected duct disconnected from the main duct.
The main indications for a percutaneous treatment of a postoperative benign biliary stricture are: (1) poor patient’s general condition that does not permit another surgical intervention, (2) presence of altered anatomy that does not permit the endoscopic approach, (3) septic status that requires a quick approach for decompression of the biliary tree. The main contraindication is the presence of non-correctable bleeding disorder.
The treatment goals should be to improve and maintain bile duct patency as well as preventing stricture recurrence through a minimal invasive procedure. In the last 30 years percutaneous treatment of benign biliary strictures, with balloon dilatation and stenting, has been widely accepted as a valid therapeutic option with allow complication rate .
In the case of stenosis the biliary system is expected to be dilated and therefore easy to access percutaneously with US-guided puncture. However, in benign biliary stenosis often the ducts are not widely dilated as may be expected and US-guided puncture may not be straight forward. In such cases a central puncture with a 22-G needle be performed and obtain a cholangiographic picture and then perform a fluoroscopically guided puncture.
Once access in the biliary tree is obtained the next task will be that of crossing the stenosis with a guidewire. If a guidewire is advanced through the stenotic tract then there are two options: (1) advance an internal-external drain catheter and exchange the catheter gradually every 3 weeks to a larger diameter in order to dilate slowly the tract or (2) perform balloon dilatation of the stenotic area every 2-3 weeks upsizing the balloon in every session and having a 5-Fr access catheter left in situ. The presence of the internal-external drain is reducing the quality of life of the patient as this process may be long and require a period of 4–6 months and the external line is more prone to infections. In addition, the presence of a drain in situ helps quicker tract maturation.
In case of necessity of repeated dilatations for biliary stenoses and lack of endoscopic access instead of leaving an external access catheter a transjejunal approach may be performed. In such cases the procedure is performed via the fixed limb (either afferent or efferent limb) of a Roux-en-Y hepaticojejunostomy which had been created to repair biliary strictures or bile duct injuries, or specifically for the percutaneous biliary access to treat strictures or stones. The efferent limb of the Roux loop is surgically fixed to the peritoneum in a right anterior location, or the afferent limb is fixed anteriorly in the central upper abdomen. The loop can then be punctured under fluoroscopic or CT guidance usually with a thin needle; once access to the jejunum is obtained the biliary tree is catheterised in a retrograde fashion and bilioplasty may be performed. In the series by Fontein et al.  in 425 out of 494 (86 %) interventions the Roux loop was successfully accessed. The percentage of success was significantly higher for a fixed Roux loop (94 %) versus a non fixed loop (85 %). In only a very small percentage of cases a percutaneous trans-hepatic access was necessary. Interval cholangitis occurred in the 14 % of the patients and in eight cases postprocedural sepsis occurred.
Balloon dilatation is usually performed with an 8 or 10 mm wide and 2 to 4 cm long balloon. The size of the balloon is related to the type and location of the stenosis: a l0 mm balloon is generally used for common bile duct stenosis, while for lesions located in the intra-hepatic ducts 6 to 8 mm balloons may be selected. In case of biliary-enteric anastomoses, it is useful to perform the dilation using a larger balloon, varying from 10 to 20 mm in diameter; high pressure balloons may also be used and be inflated up to 22 Atm. Dilation needs to be slow and progressive in order to avoid laceration of the duct and massive bleeding into the biliary system and it may be repeated several times in particularly in case of fibrotic stenosis. The type of stricture is important in defining the response from dilalation. In the case of OLT anastomotic strictures (AS) appear to have a better response when compared with non-anastomotic strictures that are caused by ischaemic injury .
In recent years, the introduction of a cutting balloon (Boston Scientific, Natick, MA, USA) has been described in those patients with severe hard stenosis or fibrotic stenosis reducing the incidence of elastic recoil . The cutting balloon is a non-compliant balloon with four blades at right angles to each other. When the balloon is inflated, the blades cut the adjacent fibrous tissue, while the non-compliant balloon stretches the duct wall increasing the inner luminal diameter. Certainly there is higher risk of complications like bleeding, perforation and also rupture of the biliary duct.
In case of biliary lithiasis—even though rare in a postoperative stenosis—dilation of the papilla must be performed to facilitate the passage of stones into the bowel by pushing through the papilla, into the bowel, stones usually less than 1 cm in diameter. In case of stones larger than 1 cm extracorporeal lithotripsy must be performed.
Recurrent stenosis after catheter or balloon dilation of benign biliary strictures may occur in 29–58 % of cases [29, 33]; to avoid this complication and to maximise the treatment outcomes, the treatment strategy may involve stent placement. However the role of stent placement after dilation is controversial because, while it may improve long-term success, the tube itself may stimulate inflammatory reaction, fibrosis and stone formation [32, 34]. Removal of the stent may be considered in the case of benign strictures that may be reached endocopically. The evaluation of the results before stent removal is usually based on cholangiographic-morphological criteria: decreased or normal calibre of the biliary ducts, disappearance of cholangitis and an absence of “filling defects” in the stenotic tract indicate a good result of the treatment. However, bare self-expandable metallic stents (SEMS) can create tissue hyperplasia and embedment, which would preclude stent removal, and so is not a recommended treatment for the benign condition. Therefore, covered metallic stents have been created and used in benign disease.
A study of 79 patients who underwent placement of partially covered metallic stents (Wallstent; Boston Scientific, Natick, MA, USA) for a variety of benign biliary stenoses including chronic pancreatitis, biliary stone disease, post-OLT and post-surgery showed that overall success rate was about 90 % after leaving the stents in place for 4 months. Stricture resolution rate was noted to be lowest in chronic pancreatitis. The authors were able to remove all stents after biliary decompression, as confirmed by clinical and laboratory investigation. Median follow-up time after stent removal was 12 months. Stent migration occurred in 14 % of cases, and tissue hyperplasia at the proximal uncovered portion of the stent, resulting in stricture was also noted in some patients . To overcome the limitation of partially covered stents, fully covered self-expandable metal stents were developed and used in benign disease. The efficacy of covered stents in the treatment of anastomotic strictures following OLT is very promising. The stricture resolution rate ranges from 87.5 to 95.5 % at a follow-up period of 6–12 months. Recurrence of the stricture occurs in a very small number of patients. Stent migration is observed in many patients but no major complications have been reported [35, 36].
Covered stents have also the advantage that may be removed percutaneously; therefore, they are used in patients that are not suitable for endoscopic options . In a retrospective comparison of percutaneously removed covered stents versus balloon dilatation in 66 patients, the primary patency of stents was 87 % at 3 years with a shorter catheter indwelling period. In two cases covered stent migration occurred and in one case the stent could not be removed .
The goals of percutaneous treatment in biliary leaks and fistulas are: (1) to dilate any strictures, (2) to divert the bile away from the site of defect in the bile wall, (3) to drain thoroughly any collections and (4) to seal the tract if possible. Generally the option of treatment of biliary leaks follows the indication according to Nagano et al.’s  classification: Type A: these leaks are usually self-limiting, although sometimes ERCP and sphincterotomy may be required. Type B and C can be managed by ERCP and plastic stents combined with percutaneous drainage of the bile collection. Type D: require surgery and bilioenteric anastomosis or, if the draining segment is small, fibrin glue occlusion or acetic acid ablation. Sometimes operative excision of the excluded segment may be required.
In case of a free leak, a covered stent may also be used and then retrieved percutaneously. Gwon et al.  in a series of 11 patients with leaks after bilio-digestive anastomoses removed the covered stents after a mean time of 31 days and did not notice any recurrence in the 1 year follow-up.
Recurrence of benign stenosis after cholangioplasty may be due to chronic inflammation or possibly to poor stricture compliance owing to an elastic component in the scar tissue. In most series success is defined as the absence of symptoms following stent removal with normal bilirubin and alkaline phosphatase levels. Success rates ranging from 70 % to 100 % at a mean follow-up of 23–59 months (range 6–78 months) have been reported in the literature [13, 28, 31, 35]. However, a lower success rate (55 %) is reported in series with longer follow-up (5–7.5 years) [41, 42].
Most early procedure-related complications are associated with the trans-hepatic approach. Vascular complications have been reported in 2–20 % of patients undergoing percutaneous biliary puncture, in most cases resulting in transient haemobilia not requiring blood transfusion or intervention [43, 44]. Major complications are: septic shock (1.2 %) , septicaemia (5 %)  and haemorrhage requiring transfusion or hepatic artery embolisation (4 %) . Episodes of cholangitis can occur while the stent is in place (1/17 cases) or after it has been removed (2/17 cases), and have been treated with intravenous antibiotics .
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- Judah JR, Draganov PV (2007) Endoscopic therapy of benign biliary strictures. World J Gastroenterol 13:3531–3539PubMed CentralView ArticlePubMedGoogle Scholar
- Weber A, Rosca B, Neu B, Rösch T, Frimberger E, Born P, Schmid RM, Prinz C (2009) Long-term follow-up of percutaneous transhepatic biliary drainage (PTBD) in patients with benign bilioenterostomy stricture. Endoscopy 41:323–328View ArticlePubMedGoogle Scholar
- Kim JH, Ko GY, Sung KB, Yoon HK, Gwon DI, Kim KR, Lee SG (2008) Bile leak following living donor liver transplantation: clinical efficacy of percutaneous transhepatic treatment. Liver Transpl 14:1142–1149View ArticlePubMedGoogle Scholar
- Ko GY, Sung KB, Yoon HK, Kim KR, Gwon DI, Lee SG (2008) Percutaneous transhepatic treatment of hepaticojejunal anastomotic biliary strictures after living donor liver transplantation. Liver Transpl 14:1323–1332View ArticlePubMedGoogle Scholar
- Kim ES, Lee BJ, Won JY, Choi JY, Lee DK (2009) Percutaneous transhepatic biliary drainage may serve as a successful rescue procedure in failed cases of endoscopic therapy for a post-living donor liver transplantation biliary stricture. Gastrointest Endosc 69:38–46View ArticlePubMedGoogle Scholar
- Gwon DI, Shim HJ, Kwak BK (2008) Retrievable biliary stent-graft in the treatment of benign biliary strictures. J Vasc Interv Radiol 19:1328–1335View ArticlePubMedGoogle Scholar
- Petersen BD, Timmermans HA, Uchida BT, Rabkin JM, Keller FS (2000) Treatment of refractory benign biliary stenoses in liver transplant patients by placement and retrieval of a temporary stent-graft: work in progress. J Vasc Interv Radiol 11(7):919–929View ArticlePubMedGoogle Scholar
- Vellody R, Willatt JM, Arabi M, Cwikiel WB (2011) Temporary placement of stent grafts in postsurgical benign biliary strictures: a single center experience. Korean J Radiol 12(6):708–713PubMed CentralView ArticlePubMedGoogle Scholar
- Sharif K, de Ville de Goyet J (2003) Bile duct of Luschka leading to bile leak after cholecystectomy—revisiting the biliary anatomy. J Pediatr Surg 38:E21–E23View ArticlePubMedGoogle Scholar
- Zhang JM, Yu SA, Shen W, Zheng ZD (2005) Pathogenesis and treatment to postoperative bile leakage: report of 38 cases. Hepatobiliary Pancreat Dis Int 4:441–444PubMedGoogle Scholar
- Lillemoe KD, Pitt HA, Cameron JL (1992) Current management of benign bile duct strictures. Adv Surg 25:119–174PubMedGoogle Scholar
- Lillemoe KD (1997) Benign post-operative bile duct strictures. Baillieres Clin Gastroenterol 11(4):749–779View ArticlePubMedGoogle Scholar
- Zoepf T, Maldonado-Lopez EJ, Hilgard P, Malago M, Broelsch CE, Treichel U, Gerken G (2006) Balloon dilatation vs. balloon dilatation plus bile duct endoprostheses for treatment of anastomotic biliary strictures after liver transplantation. Liver Transpl 12(1):88–94View ArticlePubMedGoogle Scholar
- Park JS, Kim MH, Lee SK, Seo DW, Lee SS, Han J, Min YI, Hwang S, Park KM, Lee YJ, Lee SG, Sung KB (2003) Efficacy of endoscopic and percutaneous treatments for biliary complications after cadaveric andliving donor liver transplantation. Gastrointest Endosc 57(1):78–85View ArticlePubMedGoogle Scholar
- Reed MW, Tweedie JH (1985) Spontaneous simultaneous internal and external biliary fistulae. Br J Surg 72:538View ArticlePubMedGoogle Scholar
- Nagano Y, Togo S, Tanaka K, Masui H, Endo I, Sekido H, Nagahori K, Shimada H (2003) Risk factors and management of bile leakage after hepatic resection. World J Surg 27(6):695–698View ArticlePubMedGoogle Scholar
- Agarwal S, Sikora S, Kumar A, Saxena R, Kapoor VK (2005) Bile leaks following surgery for hepatic hydatid disease. Indian J Gastroenterol 24(2):55–58PubMedGoogle Scholar
- Kapoor S, Nundy S (2012) Bile duct leaks from the intrahepatic biliary tree: a review of its etiology, incidence, and management. HPB Surg 2012:752932PubMed CentralView ArticlePubMedGoogle Scholar
- Tanaka S, Hirohashi K, Tanaka H, Shuto T, Lee SH, Kubo S, Takemura S, Yamamoto T, Uenishi T, Kinoshita H (2002) Incidence and management of bile leakage after hepatic resection for malignant hepatic tumors. J Am Coll Surg 195(4):484–489View ArticlePubMedGoogle Scholar
- Doctor N, Dooley JS, Dick R, Watkinson A, Rolles K, Davidson BR (1998) Multidisciplinary approach to biliary complications of laparoscopic cholecystectomy. Br J Surg 85:627–632View ArticlePubMedGoogle Scholar
- Rossi M, Salvatori FM, Giglio L, Fanelli F, Cantisani V, Rossi P, David V (2002) Interventional radiology techniques in the treatment of complications due to videolaparoscopic cholecystectomy. Radiol Med (Torino) 103(4):384–395Google Scholar
- Gibson RN, Vincent JM, Speer T, Collier NA, Noack K (2005) Accuracy of computed tomographic intravenous cholangiography (CT-IVC) with iotroxate in the detection of choledocholithiasis. Eur Radiol 15(8):1634–1642View ArticlePubMedGoogle Scholar
- Oikarinen H, Paivansalo M, Tikkakoski T, Saarela A (1996) Radiological findings in biliary fistula and gallstone ileus. Acta Radiol 37:917–922View ArticlePubMedGoogle Scholar
- Sandha GS, Bourke MJ, Haber GB, Kortan PP (2004) Endoscopic therapy for bile leak based on a new classification: results in 207 patients. Gastrointest Endosc 60:567–574View ArticlePubMedGoogle Scholar
- Klingensmith WC 3rd, Turner WM (1990) Cholescintigraphy for acute cholecystitis: false positive results caused by chronic cholecystitis. Gastrointest Radiol 15:129–132View ArticlePubMedGoogle Scholar
- Bismuth H (1982) Postoperative stricture of the bile duct. In: Blumgart LH (ed) The biliary tract. Churchill Livingstone, Edinburgh, pp 209–218Google Scholar
- Strasberg SM, Hertl M, Soper NJ (1995) An analysis of the problem of biliary injury during laparoscopic cholecystectomy. J Am Coll Surg 180:101–125PubMedGoogle Scholar
- Bergman JJ, van den Brink GR, Rauws EA, de Wit L, Obertop H, Huibregtse K, Tytgat GN, Gouma DJ (1996) Treatment of bile duct lesions after laparoscopic cholecystectomy. Gut 38(1):141–147PubMed CentralView ArticlePubMedGoogle Scholar
- Mueller PR, vanSonnenberg E, Ferrucci JT Jr, Weyman PJ, Butch RJ, Malt RA, Burhenne HJ (1986) Biliary stricture dilatation: multicenter review of clinical management in 73 patients. Radiology 160(1):17–22View ArticlePubMedGoogle Scholar
- Fontein DBY, Gibson RN, Collier NA, Tse G, Wang L, Speer TG, Dowling R, de Roos A, Robertson A, Thomson B (2011) Two decades of percutaneous transjejunal biliary intervention for benign biliary disease: a review of the intervention nature and complications. Insights Imaging 2(5):557–565PubMed CentralView ArticlePubMedGoogle Scholar
- Pascher A, Neuhaus P (2005) Bile duct complications after liver transplantation. TransplInt 18:627–642View ArticleGoogle Scholar
- Atar E, Bachar GN, Bartal G, Mor E, Neyman H, Graif F, Belenky A (2005) Use of peripheral cutting balloon in the management of resistant benign ureteral and biliary strictures. J Vasc Interv Radiol 16(2 Pt 1):241–245View ArticlePubMedGoogle Scholar
- Born P, Rosch T, Bruhl K, Sandschin W, Allescher HD, Frimberger E, Classen M (1999) Long-term results of endoscopic and percutaneous transhepatic treatment of benign biliary strictures. Endoscopy 31(9):725–731View ArticlePubMedGoogle Scholar
- Citron SJ, Martin LG (1991) Benign biliary strictures: treatment with percutaneous cholangioplasty. Radiology 178(2):339–341View ArticlePubMedGoogle Scholar
- Chaput U, Scatton O, Bichard P, Ponchon T, Chryssostalis A, Gaudric M, Mangialavori L, Duchmann JC, Massault PP, Conti F, Calmus Y, Chaussade S, Soubrane O, Prat F (2010) Temporary placement of partially covered self-expandable metal stents for anastomotic biliary strictures after liver transplantation: a prospective, multicenter study. Gastrointest Endosc 72(6):1167–1174View ArticlePubMedGoogle Scholar
- García-Pajares F, Sánchez-Antolín G, Pelayo SL, Gómez de la Cuesta S, HerranzBachiller MT, Pérez-Miranda M, de La Serna C, VallecilloSande MA, Alcaide N, Llames RV, Pacheco D, Caro-Patón A (2010) Covered metal stents for the treatment of biliary complications after orthotopic liver transplantation. Transplant Proc 42(8):2966–2969View ArticlePubMedGoogle Scholar
- Kuo MD, Lopresti DC, Gover DD, Hall LD, Ferrara SL (2006) Intentional retrieval of viabil stent-grafts from the biliary system. J Vasc Interv Radiol 17(2 Pt 1):389–397View ArticlePubMedGoogle Scholar
- Kim JH, Gwon DI, Ko GY, Sung KB, Lee SK, Yoon HK, Shin JH, Song HY (2011) Temporary placement of retrievable fully covered metallic stents versus percutaneous balloon dilation in the treatment of benign biliary strictures. J Vasc Interv Radiol 22(6):893–899View ArticlePubMedGoogle Scholar
- Gwon DI, Ko GY, Sung KB, Kim JH, Yoon HK (2011) Percutaneous transhepatic treatment of postoperative bile leaks: prospective evaluation of retrievable covered stent. J Vasc Interv Radiol 22(1):75–83View ArticlePubMedGoogle Scholar
- Fiocca F, Salvatori FM, Fanelli F, Bruni A, Ceci V, Corona M, Donatelli G (2011) Complete transection of the main bile duct: minimally invasive treatment with an endoscopic-radiologic rendezvous. Gastrointest Endosc 74:1393–1398View ArticlePubMedGoogle Scholar
- Eickhoff A, Schilling D, Jakobs R, Weickert U, Hartmann D, Eickhoff JC, Riemann JF (2005) Long-term outcome of percutaneous transhepatic drainage for benign bile duct stenoses. Rocz Akad Med Bialymst 50:155–160PubMedGoogle Scholar
- Liu QG, Geng ZM, Wu SL, Yao YM, Sun H, Pan CE (2004) Reoperation for benign biliary tract diseases in 149 cases: causes and prevention. Hepatobiliary Pancreat Dis Int 2:265–269Google Scholar
- Tracey JY, Moossa AR (2006) Surgical treatment of benign lesions and strictures of the bile ducts. Chirurg 77(4):315–324View ArticlePubMedGoogle Scholar
- Familiari P, Bulajic M, Mutignani M, Lee LS, Spera G, Spada C, Tringali A, Costamagna G (2005) Endoscopic removal of malfunctioning biliary self-expandable metallic stents. Gastrointest Endosc 62(6):903–910View ArticlePubMedGoogle Scholar
- Nordback IH, Pitt HA, Coleman J, Venbrux AC, Dooley WC, Yeu NN, Cameron JL (1994) Unresectable hilar cholangiocarcinoma: percutaneous versus operative palliation. Surgery 115(5):597–603PubMedGoogle Scholar