胆囊颈管结石致胆总管扩张的研究

目的：以前瞻性方式研究对比胆囊颈管结石（ｎ＝３０）与胆囊体部结石（ｎ＝５０）对胆总管直径的影响。材料和方法：对比两组胆总管超声内径和术中实测外径。结果：胆囊颈管结石组胆总管超声内径和术中实测外径（６９ｍｍ，１１５ｍｍ）大于胆囊体结石组（４７ｍｍ，８２ｍｍ）。结论：胆囊颈管结石是胆总管轻度扩张的原因之一。     

Ultrasonography of adrenal masses: usual features

99mTc-HIDA is concentrated by the hepatocytes and excreted into the biliary system; the gallbladder, common bile duct, and early accumulation in the duodenum are visualized within 30 minutes of intravenous administration. The authors studied the utility of 99mTc-HIDA imaging in both acute and chronic cholecystitis and hepatobiliary disease in the presence of jaundice: (a) all normal gallbladders exhibited filling, (b) absence of visualization indicated gallbladder disease and/or cystic duct obstruction, (c) visualization of the gallbladder after cholecystokinin-induced emptying excluded an obstructed cystic duct and acute cholecystitis, and (d) a definitive diagnosis of hepatocellular disease, partial and complete obstruction, is possible in jaundiced patients with hyperbilirubinemias up to 5 mg%. Beyond that level, 99mT-HIDA imaging was of qualified value. The technique is useful in assessing biliary drainage in jaundiced patients with surgically altered biliary tract anatomy.     

Gray scale ultrasonography of the gallbladder: an evaluation of accuracy and report of additional ultrasound signs.

Ultrasound examinations of 76 patients with suspected gallbladder disease were compared with radiographic, surgical, and pathologic findings to determine the accuracy of the ultrasound examinations. In 13 of the 76, the gallbladder was not visualized by ultrasound. Diagnosis of the presence or absence of gallstones was correctly made by ultrasound in 56 of 63 visualized gallbladders, for an accuracy rate of 89%. A high proprtion of nonvisualized gallbladders (10 or 13) contained gallstones. Previously unreported ultrasound findings of a stone impacted in the proximal cystic duct and findings of a collection of bile in the lesser sac associated with cholelithiasis and choledocholithiasis are illustrated.     

直接胆管造影时胆囊不显影的意义探讨

本文回顾性分析连续130例(ERCP 78例、PTC 52例)肝内外胆管显影好、技术上满意、未作胆囊切除而胆囊或胆囊管不显影的直接胆管造影片及手术结果。按使胆囊不显影病变的部位将所有病例分成3组:(1)胆囊和/或胆囊管病变(83例,63.8％):(2)胆总管中下段病变(37例,28.5％);(3)肝总管远端或胆总管近端病变(9例,6.9％)。分析胆囊和/或胆囊管不显影的原因及发病机制。 本研究证明:直接胆管造影中,(1)如果肝内外胆管显影好且无梗阻性病变,胆囊和/或胆囊管不显影可下“病理胆囊”的诊断;(2)如果肝内外胆管显影好,胆总管或肝总管远端有梗阻性病变,胆囊和/或胆囊管不显影不一定提示胆囊或胆囊管病变。     

Significance of the nonopacified gallbladder in endoscopic retrograde cholangiography.

Failure to visualize the cystic duct and gallbladder during endoscopic retrograde cholangiography, while obtaining satisfactory opacification of the rest of the biliary system, is a radiographic sign of undetermined meaning. The diagnostic implication of this finding was analyzed in 63 patients with pathologically proven diagnoses. One patient was normal at surgery. Three groups of abnormal patients had: (1) obstructing lesions of the distal common bile duct (35 patients); (2) primary lesions of the cystic duct or gallbladder (19 patients); or (3) obstructing lesions about the common hepatic/cystic duct junction (8 patients). The results indicate that obstructing lesions of the distal common bile duct may cause stasis of bile within the biliary system, increased biliary pressure, and sludge formation that prevent the flow of contrast material through the cystic duct and into the gallbladder, which can cause nonopacification. If the extrahepatic biliary system is of normal caliber without evidence of an obstructing process, nonfilling of the cystic duct and gallbladder is highly predictive of pathology.     

Percutaneous chemical gallbladder sclerosis after laser-induced cystic duct obliteration: results in an experimental model.

OBJECTIVE. Chemical gallbladder sclerosis has been attempted as a way to defunctionalize the gallbladder in patients who have undergone nonsurgical removal of gallstones and who are unable to undergo surgical/laparoscopic cholecystectomy. The purpose of this investigation was threefold: to study an animal model for chemical sclerosis of the gallbladder with 95% ethanol and 3% sodium tetradecyl sulfate, to attempt chemical sclerosis immediately after percutaneous cystic duct obliteration by laser thermocoagulation, and to assess histopathologic changes in the gallbladder after sclerosis. MATERIALS AND METHODS. Percutaneous cholecystostomy and laser thermocoagulation of the cystic duct was performed in 13 pigs. Eight pigs underwent immediate gallbladder sclerosis with 95% ethanol and 3% sodium tetradecyl sulfate while two pigs received 95% ethanol only. The remaining three pigs served as controls. The cholecystostomy catheter was removed immediately after the procedure. All animals were sacrificed 6 weeks after laser thermocoagulation. Multiple sections through the gallbladder, which included the adjacent liver, the cystic duct, and the common bile duct, were obtained for histologic examination. RESULTS. At autopsy, the gallbladder in all 10 animals who underwent gallbladder sclerosis was reduced in size compared with controls. In all treated animals, the gallbladder mucosa was denuded; however, in nine of 10 cases reepithelialization had occurred. Complete sclerosis without reepithelialization was achieved in one pig who received both ethanol and sodium tetradecyl sulfate. In the two animals who received ethanol only, the depth of wall necrosis around the gallbladder lumen was less than in those pigs who received both ethanol and sodium tetradecyl sulfate. No pigs showed signs of hepatic necrosis or injury to the common bile duct. CONCLUSION. Cystic duct laser thermocoagulation allows immediate gallbladder sclerotherapy without injury to the common bile duct. Sclerosis with ethanol and sodium tetradecyl sulfate results in denudation of the gallbladder mucosa. However, a single therapeutic session with immediate removal of the cholecystostomy catheter was inadequate for gallbladder ablation in this model because of reepithelialization.     

磁共振胆管造影评估胆结石

目的 探讨和评估磁共振胆管造影对胆结石的临床应用。方法应用重T2加权快速自旋回波序列作磁共振胆管造影656例，发现胆结石115例，采集资源影像后作最大信号强度投影三维重建。结果 本组115例胆结石中，胆总管结石95例(48例伴胆囊或胆囊 肝内胆管结石)，其中嵌顿性结石36例，非嵌顿性结石51例，复合性结石8例(Mirizzi综合征4例，伴十二指肠瘘及胆—肠吻合口结石各2例)。胆囊结石(不合并胆管结石)20例。结论 磁共振胆管造影能确定结石大小，数目和位置，诊断正确率高，为非侵袭性技术，安全有效。     

Intraoperative bile duct sonography during laparoscopic cholecystectomy: experience with a 12.5-MHz catheter-based US probe.

During elective laparoscopic cholecystectomy, 20 patients underwent intraoperative evaluation of the biliary tract with a commercial 6.2-F, 12.5-MHz catheter-based ultrasound (US) probe. The study tested the feasibility of this technology for mapping the anatomy of the hepatoduodenal ligament and Calot triangle, assessing bile duct integrity, and detecting choledocholithiasis. The duct was studied with a transmural approach, the catheter being placed parallel to, but remaining outside, the bile duct. The common hepatic duct and common bile duct in the vicinity of the cystic duct were seen in all 20 patients; the junction of the cystic duct with the common hepatic duct was seen in nine patients (45%). After the cystic duct was clamped, no sonographic evidence to suggest bile duct injury was noted in any patient. The transmural imaging approach was tested in four pigs in whose common bile duct a single human calculus had been placed. In all instances the size and location of the calculus were accurately detected. Intraoperative US with a catheter-based system is a safe and effective means for interrogation of the extrahepatic biliary tree during laparoscopic cholecystectomy.     

Percutaneous transhepatic holmium laser lithotripsy for cholelithiasis and balloon dilation for common bile duct stone removal

Biliary lithiasis is common in clinical practice. We present the case of a 53-year-old man referred to our hospital with a history of biliary lithiasis. Abdominal magnetic resonance imaging revealed gallbladder stones and common bile duct stones. To avoid surgery, we opted to apply percutaneous transhepatic techniques to clear gallbladder and bile duct stones. This study reports our experience using these techniques, including percutaneous transhepatic holmium laser lithotripsy for cholelithiasis combined with balloon dilation to remove common bile duct stones and avoid open surgery.     

内窥镜逆行胰胆管造影加乳头切开术在胆管梗阻性疾病中的诊疗价值

目的:评价内窥镜下逆行胰胆管造影(ERCP)对胆管梗阻性疾病的诊断以及内窥镜下乳头括约肌切开术(EST)治疗胆总管结石的价值。方法:回顾性分析82例经手术、病理证实的ERCP表现以及62例胆总管结石的EST取石治疗。结果:本组82例,78例ERCP显示异常,其中胆管结石65例,胆管癌7例,胆管炎症狭窄3例,胆总管囊肿、胆道蛔虫、外科手术后胆总管瘘各1例。4例ERCP未显示病变,ERCP对胆管梗阻性疾病诊断正确率为95.1%(78/82)。ERCP指导EST行网篮、球篮和机械碎石网篮取石,取石60例,2例失败,取石成功率为96.8%(58/60)。结论:ERCP对胆管梗阻性疾病有较高的诊断价值,同时在EST网篮碎石、取石中具有重要的基础作用,可指导网篮取石及观察疗效。     

Cystic malformation of cystic duct: 10 cases and review of literature

AIM:To evaluate cystic malformations of the cystic duct.METHODS:Over a 2-year period,we came across 10 cases of cystic malformation of the cystic duct among patients who were investigated in our radiology department with ultrasonography,multidetector computed tomography,or magnetic resonance imaging for abdominal complaints.Radiological diagnosis of cystic malformation of the cystic duct was made on the basis of a dilated,nonvascular cystic structure near the porta hepatis,and visualization of a clear communication with either the gallbladder,normal caliber cystic duct and/or common bile duct(CBD) on at least one imaging modality.RESULTS:Four of 10 patients had saccular dilatation of the cystic duct.Six patients had fusiform dilatation of the cystic duct,and two of these had only mild fusiform dilatation.Two patients had associated CBD dilatation and one had associated cystic duct calculi and malignancy.CONCLUSION:Cystic malformations of the cystic duct should be recognized as a distinct type of choledochal cyst and should be added as type Ⅵ cyst in Todani’s classification.     

Tissue response of the biliary and digestive system of rabbits after MTBE infusion into the gallbladder

We evaluated the tissue response of the biliary and digestive system after Methyl-tert-Butyl-Ether (MTBE) gallbladder infusion in 32 rabbits. After laparotomy, MTBE (5-11 ml) was infused into the gallbladder for eight hours. Animals were sacrificed after eight hours or after two months. Control animals received saline solution infusion into the gallbladder. Afterwards the gallbladder, the common bile duct, the liver, the pancreas and the duodenum were examined histologically. All animals receiving MTBE had different degrees of gallbladder necrosis, common bile duct necrosis and necrosis of intrahepatic bile ducts. After two months, scar formation and a hyperplastic cholecystitis were observed. Control animals did not have comparable tissue reactions; only small areas of necrosis in the gallbladder and the common bile duct occurred after eight hours. The gallbladder, common bile duct and liver remained unchanged in those animals which survived two months. Although the results of this animal study cannot be directly transferred to humans, the data suggest that MTBE should be used in gallstone therapy with caution, and that if it is used, a well-controlled follow-up of these patients is necessary.     

Carcinoma of the gallbladder: a risk associated with gallbladder-preserving treatments for cholelithiasis

Five cases of carcinoma of the gallbladder associated with nonsurgical treatment of cholelithiasis are presented in view of the recent interest in gallbladder-preserving procedures. Three patients developed gallbladder cancer that was diagnosed 4, 11, and 72 years, respectively, after cholecystostomy. One other patient had gallbladder carcinoma diagnosed 7 months after extracorporeal shock wave lithotripsy for common bile duct stones. The tumor was probably present but not identified at the time of lithotripsy. The last patient had undiagnosed gallbladder malignancy at the time of cholecystostomy for treatment of acute calculous cholecystitis. Gallbladder carcinoma has been reported in 1% of patients undergoing cholecystectomy, and the risk of carcinoma developing in patients with asymptomatic cholelithiasis has been estimated at less than 1%. These figures should not diminish the role of gallbladder-preserving treatments in elderly and selected high-risk patients for whom cholecystectomy may be hazardous. However, such patients must undergo a thorough imaging assessment both before and after treatment to ensure that a gallbladder carcinoma is not overlooked.     

Percutaneous cholecystostomy catheter removal and incidence of clinically significant bile leaks: a clinical approach to catheter management

OBJECTIVE: We sought to determine the incidence of bile leaks upon removal of small-bore percutaneous cholecystostomy catheters and to evaluate clinical and imaging guidelines to ensure safe catheter removal. MATERIALS AND METHODS: A retrospective evaluation of all gallbladder drainages performed over a 5-year period revealed 163 patients (range, 7-98 years) who underwent percutaneous cholecystostomy catheter placement. Medical records and imaging studies were reviewed to assess the events at catheter removal (e.g., inadvertent removal, controlled removal with cholangiography without tract imaging, or controlled removal with cholangiography with tract imaging) and the incidence of major and minor bile leaks. RESULTS: The events at catheter removal were assessed in 66 patients. Group 1 was 45 patients whose catheters were removed after a minimum of approximately 3 weeks with a cholangiogram that established cystic and common duct patency and no imaging of the tract. Catheters were not removed until the patient recovered from acute illnesses that contributed to acalculous cholecystitis. Group 2 was 11 patients managed similarly to group 1 except that tract imaging was performed at catheter removal. Group 3 was 10 patients whose tubes came out inadvertently without cholangiogram or tract imaging. Two major (group 2 and group 3) and two minor (group 2) bile leaks occurred. No bile leaks occurred in group 1 (p = 0.006). CONCLUSION: Major bile leaks occurred in 3% of patients, and minor leaks occurred with equal frequency. Tract imaging may not be necessary in patients with small-bore gallbladder catheters who have recovered from critical illness, show patent cystic and common ducts, and have had catheters for 3-6 weeks.     

Gallbladder function and fasting enterogastric bile reflux

The relationship between gallbladder function and duodenogastric reflux of bile has been investigated in the fasting phase by 99Tcm-EHIDA biliary scintigraphy in 370 patients with abdominal pain. This isotope is cleared from the blood-pool by hepatocellular function and is excreted into the biliary tract. Obstruction of the common bile duct was found in 79 patients, leaving 291 who were evaluable for duodenogastric bile reflux. Gallblader function was present in 169 and absent in 122 patients. Duodenogastric reflux of bile was observed in 82 patients, 10 of whom had had previous gastric surgery. Only 298 of 169 (17%) patients with a functioning gallbladder showed evidence of enterogastric bile reflux compared to 43 of 122 (35%) with absent gallbladder function (p less than 0.005 by Chi Square). These results suggest that continuous bile flow into the duodenum in the absence of a functioning gallbladder facilitates duodenogastric reflux.     

Cholangiography: a routine procedure in elective cholecystectomy?]

A prospective study to evaluate the selective or routine use of intraoperative cholangiography on elective cholecystectomy was performed. 178 patients were studied, listing criteria to explore the biliary tract with the cholangiography aspects. The criteria showing choledocholithiasis were the alkaline phosphatase and/or bilirubin increase, dilated common bile duct, large cystic duct, small stones and pancreatitis or jaundice on the past history. The patients were divided in 4 groups: 1) no criteria: 61 (34.3%); 2) one criterion: 53 (30%); 3) two criteria: 22 (12.3%); 4) more than two criteria: 42 (23.4%). The false-positive was 1.6% to the first group, 3.8% to the group 2 and 0% to the other groups. We concluded that the intraoperative cholangiography must be achieved on patients that have at least one choledocholithiasis criterion.     

肝华支睾吸虫病多层螺旋CT 表现的研究

目的：探讨肝华支睾吸虫病的多层螺旋C T表现。方法对经临床证实的65例肝华支睾吸虫病的多层螺旋C T表现进行分析总结。结果65例肝华支睾吸虫病均有肝内胆管呈囊状及杵状扩张,其中38例肝华支睾吸虫病扩张胆管内可见点状软组织密度虫体影,占58％（38/65）,13例胆囊内见点片状沉积物样及团状虫体影,占20％（13/65）。合并胆管结石6例,占9．2％（6/65）。合并胆囊结石8例,占12．3％（8/65）。合并胆管炎8例,占12．3％（8/65）。合并胆囊炎5例,占7．6％（5/65）。合并肝脓肿3例,占4．6％（3/65）。65例胆总管均未见扩张。多平面重建可更仔细的观察肝胆管扩张情况。结论肝内胆管呈囊状及杵状扩张,而胆总管无扩张是肝华支睾吸虫病的特征性CT表现。扩张胆管内点状及胆囊内沉积物样或团状虫体影,是肝华支睾吸虫病的特异征象。多平面重组可更细致观察肝胆管扩张情况和细节,结合实验室检查,可以做出准确的诊断。     

腹腔镜胆囊术后影像学表现

目的探讨30例腹腔镜胆囊术后胆道系统的影像学特点。方法回顾性分析腹腔镜胆囊术后影像学资料完整的30例,其中16例行转开腹手术,14例腹腔镜胆囊术后出现并发症。结果 5例胆总管结石MR显示胆总管内有低信号改变,"T"管造影为充盈缺损区。3例胆汁漏显示对比剂浓聚及肝包膜下积液。2例腹腔镜胆囊术后小胆囊系胆囊管遗留稍长;1例腹腔镜术后胆结石脱落到胆囊窝附近,1例误扎胆总管MRCP为胆总管下端剪切样改变。结论影像学检查对发现腹腔镜胆囊术后并发症具有重要作用。     

Differential diagnosis of gallbladder distention by angiography (author's transl)

The angiography alterations of 42 cases with gallbladder distention in inflammatory or malignant disease are compared with 44 those of gallbaldder distension in distal occlusion of the common bile duct. Branches of the cystic artery were more frequent and wider in patients with gallbladder disease than those with distal common duct occlusion. In the first group, there is more often accumulation of contrast medium in the gallbladder wall, and the opacified wall is wider than in common duct obstruction. Tumor vessels are observed in 50% of malignant gallbladder disease, significant difference in the diameter of the cystic artery trunc could not be found.     

Prospective diagnosis of choledocholithiasis

Choledocholithiasis was detected by ultrasound in 11 of 87 patients (13%) overall, including 11 of 56 patients (20%) who had dilated ducts. Choledocholithiasis occurred with a normal caliber common bile duct in 31 of 87 patients (36%), and choledocholithiasis occurred without stones in the gallbladder in seven of 66 patients (11%). Biliary ultrasound plays a limited role in the exclusion of choledocholithiasis.