医源性胆道损伤52例报告

目的:总结医源性胆道损伤的经验教训。方法:对过去33年间5 2例医源性胆道损伤进行回顾性分析。结果:肝外胆道手术所致4 8例,胃大部切除术及肝脏手术所致各2例。损伤部位在肝总管与胆总管交界处34例,肝总管6例,胆总管6例,左右肝管汇合部4例,左、右肝管各1例。胆管完全性损伤30例,部分性损伤2 2例。结论:要警惕医源性胆道损伤的发生,及早诊断并修复胆道的连续性是提高疗效的关键     

New clues for the developing human biliary system at the porta hepatis

The human biliary system is formed from the hepatic diverticulum, a structure which develops from the embryonic foregut in the fourth week of gestation. The cephalic portion of the hepatic diverticulum lies within the septum transversum, and gives rise to entodermal cells which become the primitive hepatocytes. The caudal part of the hepatic diverticulum is molded by mesenchyme to form the gallbladder, cystic duct, and extrahepatic bile duct. The gallbladder is initially tubular in shape, and undergoes morphological changes to become saccular during the 11th week of gestation. The extrahepatic bile duct elongates and widens as gestation progresses, and intramural mucus glands develop. There is no solid stage during the development of the extrahepatic bile duct. The extrahepatic bile duct is a well-defined tubular structure by the 6th week of gestation, whereas the intrahepatic biliary system during this period of gestation is represented by the primitive ductal plate. The ductal plate undergoes structural changes from the 11th week of gestation, beginning at the porta hepatis and progressing through gestation to the periphery of the liver. This remodeling process shapes the ductal plate from a flat sheath of biliary epithelium surrounding the portal vein branches into a network of interconnecting tubular structures. Mesenchyme plays an important role in ductal plate remodeling. The intrahepatic biliary system is in luminal continuity with the extrahepatic bile duct throughout gestation at the porta hepatis. The major bile ducts at the porta hepatis are fully formed by the 16th week of gestation. Received: September 30, 2000 / Accepted: January 10, 2001     

The etiology of "white bile" in the biliary tree

"White bile" is the colorless fluid occasionally found in occluded biliary systems. The absence of pigments in this "bile" was not satisfactorily explained. The objectives of this study were to assess its etiology. In dogs, "white bile" developed whenever both the common bile duct and the cystic duct were ligated. In comparison, dark green ("black") bile occurred when only the common bile duct was ligated leaving the gallbladder in communication with the obstructed ducts. The pressure in extrahepatic ducts containing "white bile" was significantly higher than in those filled with "black bile." Flow in the extrahepatic ducts was assessed by the aid of radioiodinated human serum albumin (RIHSA). When "black bile" was present, the direction of flow was from the extrahepatic ducts into the gallbladder. Whenever "white bile" developed, a reverse flow from the extrahepatic ducts into the liver was observed. Thus, the role of the gallbladder appears to be decompression of the biliary system allowing bile flow from the liver even in obstruction. In the absence of the gallbladder water absorption activity, the colorless secretion of the bile ducts seems to "back wash" into the liver and replace the bile present in the ducts at the time of occlusion.     

Gallbladder cancer spreading into the aberrant cystic duct: First literature report

Introduction and importanceAlthough variations from the standard anatomy of the extrahepatic bile ducts are common, duplication of the cystic duct draining a single gallbladder is an extremely rare variant. We herein describe the first report of gallbladder cancer spreading into the aberrant cystic duct.Case presentationA 60-year-old female presented with upper abdominal pain, and she was diagnosed with gallbladder cancer. Intraoperatively, she was found to have a duplicated cystic duct draining a single gallbladder, and her cancer had spread into the aberrant cystic duct entering the anterior right hepatic duct. Right hepatectomy with extrahepatic bile duct resection was performed to achieve R0 resection.Clinical discussionIn the English literature, 28 cases of duplicated cystic duct draining a single gallbladder have been reported. However, no cases of gallbladder cancer have been described in these previous reports.ConclusionWe report the first case of gallbladder cancer spreading into the aberrant cystic duct. To perform an oncologically adequate operation, exact assessment of the biliary tree is essential not only preoperatively but also intraoperatively.     

Hepatic portocholecystostomy for biliary atresia.

Four infants with biliary atresia had gross obliteration of the common hepatic duct but residual patency of the gallbladder, cystic duct and common bile duct. The patients were treated by hepatic portocholecystostomy utilizing the extant bile ducts for biliary reconstruction. Bile drainage was achieved in all four infants. There was a conspicuous absence of postoperative cholangitis. Subsequent obstruction of the distal ducts in two patients necessitated reoperation and construction of a standard biliointestinal conduit. The other two children are surviving, jaundice-free, 5 1/2 and 5 years after operation with minimal sequelae of biliary atresia. Hepatic portocholecystostomy is a feasible surgical alternative to intestinal reconstruction in patients with biliary atresia in whom the disease is limited to the proximal extrahepatic bile ducts.     

Clinical evaluation of 99mTc-pyridoxylideneglutamate for hepatobiliary scanning

Clinical evaluation of hepatobiliary scanning using ^99mTc-PG was done in twenty normal volunteers and eighty-three patients with liver and biliary tract disease. Satisfactory images of the biliary tract were obtained using small dosages of this agent. In normal humans, the agent reached the liver in 5 minutes, and the common bile duct, gallbladder, and duodenum in 10 to 20 minutes. The gallbladder was not visualized when the cystic duct was obstructed in patients with acute and chronic cholecystitis. In patients with partial common bile duct obstruction, a distended duct was visualized and there was delay in transit of radioactivity into the duodenum. With complete common bile duct obstruction, no radioactivity was seen in the biliary or gastrointestinal tracts up to 24 hours after injection. Hepatocellular disease was characterized by delayed liver clearance and delayed visualization of the biliary and gastrointestinal tracts. There were no toxic or other untoward effects in any patient.     

腹腔镜胆囊切除术中肝外胆道解剖异常的防范

目的探讨腹腔镜胆囊切除术（1aparoscopic cholecystectomy，LC）中肝外胆道异常的诊断及处理。方法1999年10月～2008年6月1216例LC中，发现15例（1．2％）胆道解剖异常。3例胆囊管异常粗、短，开口在左右肝管汇合部；1例胆囊颈部结石嵌顿，胆总管较细，向上牵拉胆囊使胆总管走行移位；1例胆囊管与肝总管并行后低位开口，1例胆囊管在胆总管右侧回旋扭曲，开口于右肝管侧壁，2例胆囊壶腹部粘连严重，覆盖于胆总管及肝总管前方；3例在胆床附近见迷走胆管走行；3例在分离胆囊管时发现右后肝管开口于肝总管；1例Mirizzi综合征解剖不清。仔细分离，丝线结扎或上钛夹处理，解剖不清者中转开腹。结果13例顺利完成LC；2例（13．3％）中转开腹，其中1例副右肝管损伤，1例Mirizzi综合征。无腹腔内出血、腹腔感染、肠道损伤及死亡等严重并发症。15例随访3个月～4年，其中〉1年11例，无胆道狭窄及残余结石。结论LC术中精细解剖胆囊三角，确切辨认各管道关系，是预防胆道异常情况下肝外胆道损伤的关键。     

Structure and Innervation of the Extrahepatic Biliary System in the Australian Possum,Trichosurus Vulpecula

The morphology, microanatomy and innervation of the biliary tree of the Australian possum, Trichosurus vulpecula, was examined. The gross morphology of the gallbladder, hepatic and cystic ducts, and the course of the common bile duct, conforms to those of other species. The sphincter of Oddi has an extraduodenal segment that extends 15mm from the duodenal wall; within this segment the pancreatic and common bile ducts are ensheathed together by sphincter muscle. Their lumens unite to form a common channel within the terminal intraduodenal segment.Nerve cell bodies of the gallbladder were found in an inter-connecting network of ganglia that were located in the serosa, muscularis and mucosa. Nerve fibres innervated the muscle, arterioles and the mucosa. Few ganglia were found along the supra sphincteric portion of the common bile duct. Nerve trunks followed the duct and a dense nerve fibre plexus was found in the mucosa. In the sphincter most ganglia were located in two plexuses, the first between the layers of the external sphincter muscle, which was continuous with the external muscle of the duodenum, and the second was associated with the internal sphincter muscle. Nerve fibres were numerous in the sphincter muscle, and were also found in the subepithelial and periglandular plexuses of both the pancreatic and common bile ducts.     

EXTRAHEPATIC BILIARY ANATOMY AT LAPAROSCOPIC CHOLECYSTECTOMY: IS ABERRANT ANATOMY IMPORTANT?

BACKGROUND: The prevention of major duct injury at cholecystectomy relies on the accurate dissection of the cystic duct and artery, and avoidance of major adjacent biliary and vascular structures. Innumerable variations in the anatomy of the extrahepatic biliary tree and associated vasculature have been reported from radiographical and anatomical studies, and are cited as a potential cause of bile duct injury at cholecystectomy. METHODS: A photographic study of the dissected anatomy of 186 consecutive cholecystectomies was undertaken and each photo analysed to assess the position of the cystic duct and artery, the common bile duct and any anomalous structures. RESULTS: The anatomy in the region of the gallbladder neck was relatively constant. Anatomical variations were uncommon and anomalous ducts were not seen. Vascular variations were the only significant abnormalities found in the present series. CONCLUSION: Anatomy in the region of the gallbladder neck varies mostly in vascular patterns. Aberrant ducts or duct abnormalities are rarely seen during cholecystectomy hightlighting the principle that careful dissection and identification is the key to safe cholecystectomy.     

胆囊壶腹钟表定位法对保障腹腔镜胆囊切除安全性的指导意义

为了保障腹腔镜胆囊切除安全性,明确了胆囊壶腹钟表定位法概念,按照视线方向可有垂直面、水平面和倾斜面3种定位法,面对表盘将胆囊壶腹分为3点区位、6点区位、9点区位、12点区位、轴位5种类型。3点区位胆囊壶腹易被戳破,强行分离有损伤肝总管、右肝管及右肝动脉的风险;6点区位胆囊壶腹可坠入Winslow孔并向腹侧及左侧推挤胆总管,沿膨大的壶腹左侧及尾侧缘分离,易将位于其腹侧的胆总管误认为胆囊管切断;9点区位胆囊壶腹可与十二指肠发生致密粘连,需剜除相应的胆囊壁,避免损伤十二指肠;12点区位胆囊壶腹常包绕覆盖肝总管和胆总管腹侧面,沿其左侧及尾侧缘分离时极易将胆总管误认为胆囊管横断。遵循胆囊壶腹钟表定位法原则,有助于正确辨识解剖关系,避免损伤肝外胆管及血管,减少出血及"医源性胆囊管结石"和"医源性胆总管结石"发生率,顺利处理各种复杂胆囊病变。     

Surgical significance of extrahepatic biliary tree anomalies

A patient with an anomalous insertion of the right hepatic duct into the cystic duct was noted during cholecystectomy and confirmed by operative cholangiography. This case and related anomalies of the bile ducts are of sufficient importance that, because of the technical difficulties and dangers incidental to their presence, no surgeon who operates on the gallbladder and bile ducts can afford to be unaware of their existence. Adequate exposure, careful dissection, and accurate knowledge of the regional anatomy plus a realization of the frequency and multiplicity of abnormalities of the extrahepatic biliary tree are requisites for safe biliary tract surgery. In addition, carefully performed operative cholangiography can be an indispensable aid in the clarification of anatomic variations. In case of recognized operative injury to the extrahepatic biliary tree, primary repair or biliary-intestinal anastomosis can usually be carried out with good results.     

Usefulness of intraoperative fluorescence imaging to evaluate local anatomy in hepatobiliary surgery

BACKGROUND/PURPOSE: One of the major complications encountered in hepatobiliary surgery is the incidence of bile duct and blood vessel injuries. It is sometimes difficult during surgery to evaluate the local anatomy corresponding to hepatic arteries and bile ducts. We investigated the potential utility of an infrared camera system as a tool for evaluating local anatomy during hepatobiliary surgery. METHODS: An infrared camera system was used to detect indocyanine green fluorescence in vitro. We also employed this system for the intraoperative fluorescence imaging of the arteries and biliary system in a pig. Further, we evaluated blood flow in the hepatic artery, portal vein, and liver parenchyma during a human liver transplant and we investigated local anatomy in patients undergoing cholecystectomy. RESULTS: Fluorescence confirmed that indocyanine green was distributed in serum and bile. In the pig study, we confirmed the fluorescence of the biliary system for more than 1 h. In the liver transplant recipient, blood flow in the hepatic artery and portal vein was confirmed around the anastomosis. In most of the patients undergoing cholecystectomy, fluorescence was observed in the gallbladder, cystic and common bile ducts, and hepatic and cystic arteries. CONCLUSIONS: Intraoperative fluorescence imaging in hepatobiliary surgery facilitates better understanding of the anatomy of arteries, the portal vein, and bile ducts.     

Primary sclerosing cholangitis in which differential diagnosis from gallbladder carcinoma was difficult

We report a case of localized primary sclerosing cholangitis (PSC) which was difficult to distinguish from gallbladder carcinoma. A 75-year-old woman with elevated serum bilirubin was hospitalized and underwent endoscopic nasobiliary drainage (ENBD). There was no history of diseases such as gallbladder stone, pancreatitis, or ulcerative colitis. Cholangiography through the ENBD tube showed localized stenosis of the common bile duct; the gallbladder could not be seen. Angiography showed no encasement of the hepatic artery. Ultrasonography showed a tumor in the cystic duct, and the tumor had invaded the gallbladder and common bile duct. We diagnosed gallbladder carcinoma on radioimaging, and performed an S4aS5 subsegmentectomy of the liver and resection of the extrahepatic biliary tree. Pathologically, no malignant cells were detected, and fibrosis around bile ducts and infiltration of inflammatory cells into hepatic tissue were found. It is well known that PSC is sometimes difficult to differentially diagnose from cholangiocarcinoma. Our case is of high interest because ultrasonography showed findings suggestive of gallbladder carcinoma. It is therefore necessary to keep the possibility of PSC in mind for the diagnosis and treatment of such localized biliary stenosis.     

Combined vascular and biliary fluorescence imaging in laparoscopic cholecystectomy

Background

Bile duct injury in patients undergoing laparoscopic cholecystectomy is a rare but serious complication. Concomitant vascular injury worsens the outcome of bile duct injury repair. Near-infrared fluorescence imaging using indocyanine green (ICG) is a promising, innovative, and noninvasive method for the intraoperative identification of biliary and vascular anatomy during cholecystectomy. This study assessed the practical application of combined vascular and biliary fluorescence imaging in laparoscopic gallbladder surgery for early biliary tract delineation and arterial anatomy confirmation.

Methods

Patients undergoing elective laparoscopic cholecystectomy were enrolled in this prospective, single-institutional study. To delineate the major bile ducts and arteries, a dedicated laparoscope, offering both conventional and fluorescence imaging, was used. ICG (2.5 mg) was administered intravenously immediately after induction of anesthesia and in half of the patients repeated at establishment of critical view of safety for concomitant arterial imaging. During dissection of the base of the gallbladder and the cystic duct, the extrahepatic bile ducts were visualized. Intraoperative recognition of the biliary structures was registered at set time points, as well as visualization of the cystic artery after repeat ICG administration.

Results

Thirty patients were included. ICG was visible in the liver and bile ducts within 20 minutes after injection and remained up to approximately 2 h, using the ICG-filter of the laparoscope. In most cases, the common bile duct (83 %) and cystic duct (97 %) could be identified significantly earlier than with conventional camera mode. In 13 of 15 patients (87 %), confirmation of the cystic artery was obtained successfully after repeat ICG injection. No per- or postoperative complications occurred as a consequence of ICG use.

Conclusion

Biliary and vascular fluorescence imaging in laparoscopic cholecystectomy is easily applicable in clinical practice, can be helpful for earlier visualization of the biliary tree, and is useful for the confirmation of the arterial anatomy.     

肝移植术变异胆管胆漏的预防与处理

目的 探讨肝移植术中变异肝管胆漏的预防及治疗.方法 回顾性分析我院3例肝移植术后发生变异肝管胆漏的诊断及预防、治疗方法.3例供肝切取均采用肝肾联合切取的方法,胆管重建方式为胆总管端端吻合.结果 1例右后叶副肝管汇入胆囊管患者在胆管吻合后发现肝门处胆囊管残端胆汁漏出,立即拆除原胆管吻合口,成型后一期吻合,术后痊愈.1例Luschka胆管漏患者术后胆漏经过充分引流漏口自行闭合痊愈,但最后终因肝内外感染而于术后7个月再次肝移植.另一例右后叶副肝管汇入胆总管患者,术中遗漏断端导致术后胆漏.该患者因严重并发症行二次肝移植.结论 了解肝内外胆管的解剖和常见变异形式,供肝修整时仔细辨认肝门组织,提高对存在副肝管及迷走胆管变异的警惕性,对预防肝移植术后胆管断端胆漏的发生非常重要.     

Magnetic resonance cholangiography for the diagnosis of biliary atresia

Purpose: The aim of this study was to evaluate the usefulness of magnetic resonance cholangiography (MRC) for the diagnosis of biliary atresia in infantile cholestatic jaundice. Methods: Forty-seven consecutive infants with cholestatic jaundice underwent single-shot MRC. The diagnosis of biliary atresia was made by MRC based on the nonvisualization of extrahepatic bile ducts and excluded on the basis of the complete visualization of extrahepatic bile ducts. The final diagnosis of biliary atresia (BA group, n = 23) or nonbiliary atresia (NBA group, n = 24) was established by operation or clinical follow-up until the jaundice resolved. Results: The extrahepatic bile ducts including the gallbladder, the cystic duct, the common bile duct, and the common hepatic duct were visualized in 23 of the 24 infants of the NBA group. The extrahepatic bile ducts, except the gallbladder, were not depicted in any infant of the BA group. MRC had an accuracy of 98%, sensitivity of 100% and specificity of 96%, for diagnosis of biliary atresia as the cause of infantile cholestatic jaundice. Conclusions: MRC is a very reliable noninvasive imaging modality for the diagnosis of biliary atresia. In infants with cholestatic jaundice and considered for exploratory laparotomy, MRC is recommended to avoid unnecessary surgery.     

Small cell carcinoma of the cystic duct: A case report

Small cell carcinoma usually involves the lung and rarely affects the biliary tract, especially the cystic duct. In this article we report a case of small cell carcinoma of the cystic duct in a 46-year-old Japanese man. The patient presented with abdominal pain and jaundice. Imaging showed a small nodule in the cystic duct invading the common bile duct with dilatation of the proximal biliary tree. The hepatic artery and portal vein were free from invasion. Extended right hepatic lobectomy, cholecystectomy, and resection of the extrahepatic proximal bile ducts were performed together with lymph node dissection under the tentative diagnosis of carcinoma of the cystic duct. Histopathologic examination of the resected specimen revealed small cell carcinoma arising in the cystic duct and extending into the common bile duct. The postoperative clinical course was uneventful, and the patient is doing well without any signs of recurrence 1 year after the operation. To our knowledge this is the first documented case of a small cell carcinoma arising in the cystic duct.     

Spontaneous cystic duct perforation associated with acalculous cholecystitis

Spontaneous perforation of the extrahepatic biliary tree is rare in adults. Although perforation of the hepatic, common hepatic, common bile, and cystic ducts has been reported, review of the English literature reveals only four cases of cystic duct perforation, each attributed to calculi. We herein report the first known case of spontaneous perforation of the cystic duct in the absence of biliary calculi.     

Prophylactic excision of the gallbladder and bile duct for patients with pancreaticobiliary maljunction.

HYPOTHESIS: Pancreaticobiliary maljunction (PBM) is a high-risk factor for biliary tract carcinogenesis because of a continuous reflux of pancreatic juice into the biliary tract. It remains to be disclosed whether we should perform prophylactic excision of gallbladders and bile ducts. DESIGN: A person-year method. SETTING: A university hospital. PATIENTS: We studied 68 patients with PBM treated between August 1, 1974, and December 31, 1999. MAIN OUTCOME MEASURES: Relative risks (observed number-expected number ratios) of gallbladder and bile duct carcinomas according to type of bile duct dilation (ie, cystic dilation, diffuse dilation, and nondilation). RESULTS: Observed number-expected number ratios of gallbladder carcinomas were high: 291.3 in 43 patients with cystic dilation, 167.2 in 16 patients with diffuse dilation, and 419.6 in 7 patients with nondilation. Observed number-expected number ratios of bile duct carcinomas were 194.2 in 43 patients with cystic dilation before surgery and 142.8 in 39 patients with cystic dilation after long postsurgical follow-up. All these values were statistically significant (P<.01). CONCLUSIONS: The gallbladder carries a high risk for carcinogenesis in all types of dilation in patients with PBM. The bile duct carcinomas of PBM were exclusively identified by the type of cystic dilation. Prophylactic cholecystectomy should be recommended for all dilation types, and prophylactic excision of bile ducts including cholecystectomy should be performed in patients with PBM and cystic dilation. Complete excision of extrahepatic dilated bile ducts and careful follow-up for carcinogenesis in residual dilated bile ducts should be recommended for patients with PBM and cystic dilation.