Antipyrine elimination test as a guideline for selecting patients for transhepatic biliary drainage

Antipyrine elimination halflife (AP t1/2) was studied in 18 patients with obstructive jaundice along with routine liver function tests 24-48 h before the expected time of percutaneous transhepatic biliary drainage (PTBD). To see if it is possible to predict the outcome of PTBD, various predrainage parameters were correlated with the postdrainage bilirubin clearance after 1 week of drainage. Predrainage AP t1/2 correlated best with bilirubin clearance (r = 0.775, P less than 0.01) compared with predrainage serum bilirubin, alkaline phosphatase and serum proteins/albumin. Eight patients had AP t1/2 less than 15 h, while 10 had AP t1/2 greater than 15 h. Patients with AP t1/2 less than 15 h had significantly faster recovery after PTBD than patients with AP t1/2 greater than 15 h. If PTBD can be restricted to those with AP t1/2 less than 15 h, the advantages of preliminary PTBD can be achieved with minimum complications. Thus, estimation of AP t1/2 may aid in the selection of patients with obstructive jaundice who are likely to benefit by preliminary biliary decompression.     

Stenting and interventional radiology for obstructive jaundice in patients with unresectable biliary tract carcinomas

Together with biliary drainage, which is an appropriate procedure for unresectable biliary cancer, biliary stent placement is used to improve symptoms associated with jaundice. Owing to investigations comparing percutaneous transhepatic biliary drainage (PTBD), surgical drainage, and endoscopic drainage, many types of stents are now available that can be placed endoscopically. The stents used are classified roughly as plastic stents and metal stents. Compared with plastic stents, metal stents are of large diameter, and have long-term patency (although they are expensive). For this reason, the use of metal stents is preferred for patients who are expected to survive for more than 6 months, whereas for patients who are likely to survive for less than 6 months, the use of plastic stents is not considered to be improper. Obstruction in a metal stent is caused by a tumor that grows within the stent through the mesh interstices. To overcome such problems, a covered metal stent was developed, and these stents are now used in patients with malignant distal biliary obstruction. However, this type of stent has been reported to have several shortcomings, such as being associated with the development of acute cholecystitis and stent migration. In spite of these shortcomings, evidence is expected to demonstrate its superiority over other types of stent.     

Functional assessment of liver for extended hepatic resection in patients with obstructive jaundice

We studied whether the maximal excretion rate of indocyanine green (ICG Bmax) and the 2-h ICG excretion rate in the bile could be used to estimate the separate functions of the left and right liver in 20 patients with biliary obstruction at the hepatic hilus. ICG Bmax was measured after biliary decompression. An operative procedure that preserved the side of the liver with a positive ICG Bmax value was selected. Eighteen patients tolerated extensive hepatic resection, such as right trisegmentectomy, extended right lobectomy, extended left lobectomy, or left lobectomy. However, prolonged jaundice was observed postoperatively in five of the six patients with 2-h excretion rates of less than 25% and who had undergone extended right lobectomy. One patient on whom extended right lobectomy had been performed died because of postoperative hepatic failure. His ICG Bmax value was +0.6 and his 2-h excretion rate was very low (3%). ICG Bmax and the 2-h excretion rate in the bile reflected well the degree of separate hepatic dysfunction in patients with biliary obstruction at the hepatic confluence. If ICG Bmax value is more than +1.0, resection of more than two segments, such as trisegmentectomy or extended hepatic lobectomy, may be tolerated, and if the ICG Bmax value is positive, hepatic lobectomy may be tolerated. ICG Bmax and 2-h excretion rate in bile are useful indicators of hepatic functional reserve of the separate lobes of the liver in patients with biliary obstruction at the hepatic hilus.     

术前胆道引流对低位恶性胆道梗阻患者行胰十二指肠切除术后的影响

目的 评价术前胆道引流(PBD)对低位恶性胆道梗阻性黄接受胰十二指肠切除术(PD)后的并发症、死亡率及住院时间的影响.方法 回顾性总结分析2001年1月至2010年12月期间接受PD术的71例低位恶性胆道梗阻患者的临床资料.术前胆道引流方法包括经皮肝穿刺胆道引流(PTCD)、逆行胰胆管造影术(ERCP)及胆囊造瘘术,71例中行PBD患者19例(26.8%),未行PBD患者52例(73.2%).结果 PBD组总胆红素(TBIL)在引流前为(424.9±129.9)μmol/L,引流后下降为(77.7±48.6)μmol/L,差异具有统计学意义(t=11.1,P＜0.001).PBD组直接胆红素(DBIL)在引流前为(300.7±98.1)μmol/L,引流后下降为(60.0±34.5)μmol/L,差异具有统计学意义(t=10.7,P＜0.001).PBD组谷丙转氨酶(ALT)在引流前为(227.9±275.8)U/L,引流后下降为(90.3±66.5)U/L,差异具有统计学意义(t=2.5,P=0.023).PBD组术中输血量为(589±93)ml,非PBD组为(603±71)ml,差异无统计学意义(t=-110,P=0.913).PBD组术后并发症发生率为52.6%(10/19),非PBD组为55.8%(29/52),差异无统计学意义(P＞0.05).PBD组术后住院时间为(33±3)d,非PBD组为(25±2)d,差异无统计学意义(P＞0.05).结论 对黄疸较重、肝功能严重受损的患者,行PBD可有效改善患者的一般状况,但并未降低PD术后并发症发生率及死亡率,也未减少术后的住院时间.     

Effectiveness of endoscopic biliary drainage for unresectable hepatocellular carcinoma associated with obstructive jaundice

Endoscopic biliary drainage (EBD) for unresectable hepatocellular carcinoma (HCC) associated with obstructive jaundice remains controversial because of the short survival of these patients. To evaluate the effectiveness of this procedure, we retrospectively studied 18 patients who had unresectable HCC with obstructive jaundice and underwent EBD with poly-ethylene stents, over a 10-year period. Nine patients with tumor thrombus involving the first branches of the portal vein or portal trunk (Vp3) formed group A and the other 9 (Vp0–Vp2) formed group B. The serum albumin level and serum total bililubin level differed significantly between the two groups (P < 0.05 and P < 0.005, Student's t-test), but prothrombin time did not. The obstructive jaundice was mainly caused by direct tumor invasion in 6 patients from group A and 3 from group B, by blood clots and/or tumor fragments in 2 patients from group A and 3 from group B, by the tumor protruding into the common hepatic duct in 2 patients from group B, and by tumor compression of the common bile duct in 1 patient from each group. Drainage was successful in 4 patients (44%) from group A and in all 9 patients (100%) from group B. Among the 5 patients with unsuccessful drainage in group A, 4 had obstruction of both the left and right hepatic ducts and 3 had multiple tumors in both lobes. The mean survival time (mean ± SD) after EBD was 47 ± 44 days in group A and 181 ± 70 days in group B. In group A, the average survival time was only 85 days in the 4 patients with successful drainage. However, an improvement in the quality of life after EBD was observed in one-third of the Vp3 patients and in all of the Vp0–Vp2 patients. In summary, satisfactory palliation is possible with successful EBD, but this is difficult in most patients with Vp3 portal thrombus, direct tumor invasion involving both hepatic ducts, and multiple tumors in both lobes. It is important to determine the site, extent, and nature of the obstruction, as well as liver function and the presence of portal thrombus, before performing EBD. Received: May 28, 2000 / Accepted: October 20, 2000     

Evaluation of endoscopic biliary stenting for obstructive jaundice caused by hepatocellular carcinoma

AIM:To review the usefulness of endoscopic biliary stenting for obstructive jaundice caused by hepatocellular carcinoma and identify problems that may need to be addressed.METHODS:The study population consisted of 36 patients with obstructive jaundice caused by hepatocellular carcinoma(HCC)who underwent endoscopic biliary stenting(EBS)as the initial drainage procedure at our hospital.The EBS technical success rate and drainage success rate were assessed.Drainage was considered effective when the serum total bilirubin level decreased by 50%or more following the procedure compared to the pre-drainage value.Survival time after the procedure and patient background characteristics were assessed comparatively between the successful drainage group(group A)and the non-successful drainage group(group B).The EBS stent patency duration in the successful drainage group(group A)was also assessed.RESULTS:The technical success rate was 100%for both the initial endoscopic nasobiliary drainage and EBS in all patients.Single stenting was placed in 21 patients and multiple stenting in the remaining 15 patients.The drainage successful rate was 75%and the median interval to successful drainage was 40 d(2-295 d).The median survival time was 150 d in group A and 22 d in group B,with the difference between the two groups being statistically significant(P<0.0001).There were no statistically significant differences between the two groups with respect to patient background characteristics,background liver condition,or tumor factors;on the other hand,the two groups showed statistically significant differences in patients without a history of hepatectomy(P=0.009)and those that received multiple stenting(P=0.036).The median duration of stent patency was 43 d in group A(2-757 d).No early complications related to the EBS technique were encountered.Late complications occurred in 13 patients(36.1%),including stent occlusion in 7,infection in 3,and distal migration in 3.CONCLUSION:EBS is recommended as the initial drainage procedure for obstructive jaundice caused by HCC,as it appears to contribute to prolongation of survival time.     

Effect of preoperative biliary drainage on malignant obstructive jaundice: a meta-analysis

AIM: To evaluate the effect of preoperative biliary drainage (PBD) on obstructive jaundice resulting from malignant tumors. METHODS: According to the requirements of Cochrane systematic review, studies in the English language were retrieved from MEDLINE and Embase databases from 1995 to 2009 with the key word preoperative biliary drainage. Two reviewers independently screened the eligible studies, evaluated their academic level and extracted the data from the eligible studies confirmed by cross-checking. Da...     

Short-term effects of external and internal biliary drainage on liver and cellular immunity in experimental obstructive jaundice

Background/Purpose

The effects of preoperative biliary drainage for obstructive jaundiced patients are controversial. Although experimental studies have proven the benefit of internal biliary drainage (ID) over external biliary drainage (ED), ID has several clinical problems, such as clogging or tube replacement. The aim of this study was to determine whether there were any differences in T-cell function, liver function, and histology, between rats in ID and ED groups in short-term experiments.

Methods

Following bile duct ligation (BDL) for 14 days, rats in the ED and ID groups had 7 days of ED and 7 days of ID, respectively. Normal rats were used as negative controls (control group). For positive controls, we used a group with BDL and no drainage (BDL group). Serum bilirubin, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase (ALP) were measured, splenic T-cell proliferation was assayed to check cellular immunity, and liver histology was examined.

Results

Recovery of bilirubin and ALT was similar in the ED and ID groups. Recovery of AST was worse in the ID group than in the ED group, but the difference was not statistically significant. Levels of ALP in the BDL and ID groups were significantly higher than those in the control and ED groups. Rats in the BDL group showed a significant decrease in T-cell function compared to the control group. The ED group showed better recovery of T-cell function than the ID group in the 7 days after relief of obstructive jaundice. The livers in the ID group demonstrated histologically moderate interface hepatitis with periportal inflammation and lymphocyte infiltration, which strongly suggested incomplete tube obstruction, but those in the ED group showed minimal change.

Conclusions

ED is superior to ID concerning the recovery of cellular immunity and liver inflammation in the short-term after relief from biliary obstruction in this model. As the patency of the tube is well maintained in ED compared to ID, patency of the tube is essential to obtain good recovery of cellular immunity, irrespective of the drainage method.

     

External biliary drainage plus bile acid feeding is not equal to internal drainage in preserving the cellular immunity following prolonged obstructive jaundice

This study investigates the importance of intestinal bile flow in cellular immunity. Sprague-Dawley rats undergoing bile duct ligation (BDL) and sham ceiliotomy (Sham) for 14 and 21 days were investigated. Experimental animals following BDL were further divided into an external drainage (ED) group, an ED group with rat chow mixed with 2:2:1 cholic acid, chenodeoxycholic acid, and deoxycholic acid ( ED + BF), and an internal drainage (ID) group. Fourteen days later, they were killed and analyzed for spleen lymphocytic [³H] thymidine uptake (LHU) under mitogen stimulation with phytohemagglutinin, blood biochemistry, hemogram, and liver pathology. In the 14-day BDL experiment, LHU and serum albumin level were decreased in the BDL group (P < 0.05). After drainage, they were not significantly different among sham, ED, ED + BF, and ID groups. In the 21-day BDL experiment, the red cell volume was decreased (P < 0.05). After drainage, the ED, ED + BF, and ID groups still had a significantly lower LHU than the sham group (P < 0.05). However, the ID group had higher LHU than the ED and ED + BF groups (P < 0.05). The ED + BF group had a slightly higher LHU than the ED group but not statistically significant. Liver pathology returned to normal after drainage in the 14-day BDL model. In contrast, the 21-day BDL group had prominent periportal necrosis and developed periportal fibrosis after drainage. The present study reveals the duration of BDL determines the severity of hepatic damage. In the 14-day BDL groups, all kinds of drainage completely reverse the impaired liver function and cellular immunity. In the 21-day BDL group, 14-day drainage is inadequate for recovery because irreversible pathological changes are found. The reversal of cellular immunity in ID is better and faster, because it provides a better hepatic functional, nutritional, and hematological recovery besides the presence of primarily secreted bile acids.     

Preoperative transhepatic portal vein embolization for impaired residual hepatic function in patients with obstructive jaundice

Fifty patients with obstructive jaundice with biliary tract carcinoma who underwent percutaneous transhepatic portal vein embolization (PTPE) were studied to evaluate the clinical utility of PTPE in preparation for extensive liver resection. PTPE was performed 2–3 weeks before surgery, via the standard contralateral approach in the first seven patients and via the ipsilateral approach, devised by the authors, in the last 43 patients. The following portal branches in which embolization was planned were all successfully embolized: the right portal vein in 35 patients; the right portal vein plus the left medial portal branch in 6; the left portal vein and the right anterior portal branch in 3; the left portal vein in 2; the right anterior portal branch in 3; and the right posterior portal branch in 1. There were no procedure-related complications. Helical computed tomography demonstrated compensatory hypertrophy of the non-embolized segments. After PTPE, 35 of the 50 subjects underwent major hepatectomy with or without portal vein resection and/or pancreatoduodenectomy; the remaining 15 were found to have peritoneal dissemination or liver metastasis, and no resection was performed. Of the 35 hepatectomized patients, 3 died of posthepatectomy liver failure, and 1 patient died of pneumonia with pulmonary lymphangitis carcinomatosis; the other 31 patients were discharged in good condition. The hospital death rate was 11.8% (4/35), and mortality directly related to the surgery was 8.6% (3/35). PTPE appears to have the potential to increase the safety of extensive liver resection for patients with obstructive jaundice.     

Anti-inflammatory response in patients with obstructive jaundice caused by biliary malignancy

BACKGROUND: Obstructive jaundice potentially modulates the host defense mechanism resulting in perioperative infection. It has been reported that a systemic inflammatory response occurs in patients with obstructive jaundice. An anti-inflammatory response was studied in 29 jaundiced patients undergoing biliary drainage. RESULTS: Plasma concentrations of interleukin (IL)-10, soluble tumor necrosis factor receptor (STNFR) p55, STNFR p75, IL-1 receptor antagonist (IL-1ra), IL-6 and soluble CD14 (sCD14) were measured by using immunoassay. Plasma concentrations of IL-10, STNFR p55, STNFR p75, IL-1ra, IL-6 and sCD14 were significantly higher in jaundiced patients than in the controls (P < 0.01). After biliary drainage, the concentrations of IL-10, the three cytokine antagonists, and IL-6 decreased significantly (P < 0.05). The sCD14 concentration did not decrease. At the time of drainage, the concentrations of STNFR p55 and STNFR p75 were significantly higher in 10 patients with positive bile cultures than in 19 patients with negative bile cultures (P < 0.05). Bile cultures became positive 14 days after drainage in 10 patients, and remained negative in nine. The concentration of STNFR p55 before drainage was significantly higher in the former group (P = 0.05). The plasma concentrations of IL-10 and STNFRs were significantly correlated with the IL-6 concentration, body temperature and the white blood cell count (P < 0.05). Serum total bilirubin levels did not affect plasma levels of anti-inflammatory mediators, and sCD14. CONCLUSION: Jaundiced patients exhibited an anti-inflammatory immune response that potentially modulates the host defense mechanism and results in anergy and increased susceptibility to infection. Biliary infection may be one of the major stimuli of the immune response.     

超声内镜引导下胆汁引流治疗ERCP治疗失败的恶性梗阻性黄疸患者疗效初步研究

目的 探讨采用超声内镜引导下胆汁引流术(EUS-BD)和经皮肝胆管引流术(PTBD)再治疗经内镜逆行胰胆管造影术(ERCP)治疗失败的恶性梗阻性黄疸患者的有效性及安全性。方法 2013年1月～2018年12月我院收治的经ERCP治疗失败的恶性梗阻性黄疸患者75例,术前经B超、CT或MRCP等影像学检查证实存在恶性胆管梗阻,其中胰腺癌15例、壶腹部癌12例、胆管癌27例、胆囊癌9例、胃肠道恶性肿瘤侵犯11例和非霍奇金淋巴瘤1例。其中40例接受EUS-BD治疗,35例接受PTBD治疗。结果 在40例EUS-BD治疗患者中,采用超声内镜引导下对接技术完成治疗16例(40.0%),在超声内镜引导下顺行技术完成治疗24例(60.0%),其中37例(92.5%)操作成功,在35例PTBD治疗患者中,28例(80.0%)操作成功,EUS-BD治疗患者操作时间为治疗后,EUS-BD治疗患者血清总胆红素水平为(138.7±50.2)μmol/L,显著低于PTBD治疗患者的(162.4±60.2)μmol/L,而血清白蛋白水平为(34.8±3.7)g/L,显著高于PTBD治疗患者的(32.1±4.6)g/L,P<0.05];EUS-BD治疗患者术后并发症发生率为7.5%(3/40),其中胆道出血2例(5.0%),急性胆管炎1例(2.5%),PTBD治疗患者术后并发症发生率为22.9%(8/35,P<0.05),其中胆道出血3例(8.6%),肝包膜下出血1例(2.9%),胆汁性腹膜炎1例(2.9%),胆漏1例(2.9%),胆道感染2例(5.7%)。结论 在ERCP治疗失败的恶性胆道梗阻患者,可选择EUS-BD或PTBD进行补救治疗,或许可消退黄疸,暂时减轻病情。     

Autoantibodies against a 210kDa glycoprotein of the nuclear pore complex as a prognostic marker in patients with primary biliary cirrhosis

It has been reported that the presence of anti-nuclear antibody against a 210kDa glycoprotein of nuclear pore complex (anti-gp210) is highly speci?c for primary biliary cirrhosis (PBC). The aim of the present study was to investigate the signi?cance of anti-gp210, especially as a prognostic marker. The presence of anti-gp210 was ascertained in 113 patients with PBC and 162 controls by indirect immuno?uorescence assay using HepG2 cells and immunoblotting analysis using nuclear extracts from HeLa cells. Anti-gp210 was detected in 25 of the 113 (22.1%) patients. None of the 162 controls was positive for anti-gp210. The appearance and titre of anti-gp210 in the patients with PBC did not vary from the time of diagnosis and through their clinical course. Anti-mitochondrial antibodies (AMA), including antibodies against pyruvate dehydrogenase complex, branched chain α-ketoacid dehydrogenase complex and α-ketoglutarate dehydrogenase complex, were not detected by enzyme-linked immunosorbent assay in ?ve of the 113 (4.4%) patients with PBC. However, anti-gp210 alone was positive in one of these ?ve patients. The difference in prognosis was statistically signi?cant; patients with PBC positive for anti-gp210 died from hepatic failure more frequently than those who were negative (P < 0.01), although there were no statistically signi?cant differences in the frequency of jaundice and the histological stage at the time of diagnosis between the two groups. We suggest that the presence of anti-gp210 is one of the independent prognostic markers able to predict, at the time of diagnosis, a poor outcome in patients with PBC.     

Decreased expression of intestinal chemokine TECK/CCL25 in experimental obstructive jaundice and its reversal following internal biliary drainage

BACKGROUND: Although bacterial translocation is a significant problem in patients with obstructive jaundice, how translocation is promoted in this situation is not clearly understood. We previously reported the recovery of gut mucosal T-lymphocyte numbers in jaundiced rats following internal biliary drainage. This suggests that bile in the intestinal lumen promotes T-lymphocyte redistribution into the gut mucosa. To test this hypothesis, we have examined the expression patterns of chemokines that play an important role in lymphocyte recruitment into the small intestine. METHODS: Four groups of rats receiving one of the following surgical procedures were studied: a sham operation (SHAM), common bile duct ligation (CBDL), CBDL followed by external drainage, or CBDL followed by internal drainage. Expression levels of intestinal mRNAs encoding TECK, MECK, and LARC chemokines were assessed using real-time polymerase chain reaction. Distribution of chemokine mRNA in the rat ileum was examined using in situ hybridization (ISH). RESULTS: Following surgery, the expression levels of TECK mRNA decreased significantly in the CBDL group compared with in the SHAM group. While TECK expression did not recover after external drainage, it recovered to a near-normal level after internal drainage. Expression levels of MECK and LARC mRNAs were similar among all groups. ISH confirmed strong expression of TECK mRNA in the epithelial cells of the small intestine. CONCLUSIONS: These results indicate that bile may contribute to high expression levels of TECK/CCL25 mRNA in the small intestine. Bile may also have a role in regulating the distribution of gut mucosal T lymphocytes by promoting TECK production from epithelial cells.     

Cysteinyl leukotrienes in the bile of patients with obstructive jaundice

Background: Cysteinyl leukotrienes (LTs) are potent proinflammatory mediators. They are predominantly excreted from blood by hepatobiliary elimination. To explore the clinical significance of biliary cysteinyl LTs, we determined their concentration changes in bile during treatment in patients with obstructive jaundice. Methods: Bile samples were obtained during endoscopic or transhepatic biliary drainage. Leukotrienes C₄, D₄, and E₄ were quantified by two-step reversed-phase high-performance liquid chromatography and subsequent radioimmunoassay. Results: The increased excretion of cysteinyl LTs (LTC₄ + LTD₄ + LTE₄) decreased between day 1 and 14 after drainage (means, 171 pmol/h to 79 pmol/h; P < 0.02). During drainage, the excretion was higher when there was additional cholangitis (mean, 225 and 86 pmol/h, with and without cholangitis, respectively; P < 0.001). The concentrations of LTD₄ and LTE₄ were also higher with additional cholangitis than without (LTD₄, mean 6.0 vs 2.0 nM; P < 0.05; LTE₄, 6.8 vs 2.4 nM; P < 0.02, respectively). Biliary LTC₄ was detected only in patients with cholangitis. The biliary excretion of cysteinyl LTs was positively correlated with leukocyte concentration (r = 0.68; P < 0.005) and C-reactive protein (r = 0.73; P < 0.005) in blood. Furthermore, only in the absence of cholangitis, the excretion was positively correlated with serum γ-glutamyl transferase (r = 0.76; P < 0.02) and alanine aminotransferase (r = 0.72; P < 0.02). Conclusions: The excretion of biliary cysteinyl LTs increases with the severity of cholestasis and hepatic inflammation in patients with obstructive jaundice. An additional increase of cysteinyl LTs was observed during bacterial cholangitis. The increased biliary excretion of biologically active cysteinyl LTs may contribute to the aggravation of cholestasis and inflammatory reaction in obstructive jaundice. Received: October 1, 2001 / Accepted: March 8, 2002 Acknowledgements. We are indebted to Dr. Gabriele Jedlitschky and Dr. Inka Leier for valuable advice throughout this work. This work was supported by a fellowship awarded to Dr. Masahito Uemura by the Alexander-von-Humboldt Foundation, Bonn, Germany, and in part by the Deutsches Krebsforschungszentrum, Heidelberg, Germany. Reprint requests to: M. Uemura     

胆汁内外引流术对梗阻性黄疸大鼠肝脏Kupffer细胞CD14表达的影响

目的探讨胆汁内外引流术对梗阻性黄疸大鼠肝脏Kupffer细胞CD14表达的影响。方法将60只成年SD雄性大鼠随机分为4组,梗阻性黄疸组(OJ组)、胆汁内引流术组(ID组)、胆汁外引流术组(ED组)及假手术组(SH组)并分别建立模型;采用免疫组织化学染色及半定量分析的方法测定各组大鼠肝脏Kupffer细胞CD14的表达情况。结果 OJ组大鼠肝脏Kupffer细胞CD14表达明显强于SH组(P0.01),ID组与OJ组比较表达明显降低(P0.01),ED组与OJ组比较无显著性差异(P=0.5907)。结论梗阻性黄疸时胆汁内引流术在改善Kupffer细胞CD14表达方面优于胆汁外引流术,提示胆汁内引流术优于外引流术的机制可能与肝脏Kupffer细胞CD14表达过程有关。     

使用增剪侧孔的PTCD引流管治疗高位胆道梗阻

目的探讨使用增剪侧孔的PTCD引流管治疗高位胆道梗阻的方法与疗效。方法 36例高位恶性梗阻性黄疸患者,其中肝门部胆管癌32例,肝转移癌4例。经皮穿刺一侧肝内胆管,增剪侧孔的PTCD外引流管通过闭塞段,猪尾型头端置于接近闭塞部的肝总管或胆总管,侧孔位于梗阻近段,实现全肝（Bismuth-CorletteⅠ、Ⅱ型梗阻）或一侧肝脏（Ⅲ、Ⅳ型梗阻）无肠液返流的内外引流。Ⅳ型梗阻病变累及肝段胆管时,引流管侧孔置于穿刺道所在肝管,头端通过闭塞段置于另一闭塞的肝段肝管,增强引流效果。结果 31例成功施行跨越闭塞段后置管,完成内外引流27例和多闭塞段的单引流管外引流4例,技术成功率86%。5例因导丝未能通过闭塞段,用常规方法行一侧肝叶或肝段胆管外引流。术后1周左右总胆红素平均值由术前（189±53）μmol/L降至（135±34）μmol/L,平均下降幅度（33±13）%;临床症状改善。结论应用增剪侧孔的引流管治疗高位胆道梗阻灵活、方便,近期疗效肯定,可选择做为临床常用方法。     

Increase in serum bilirubin levels in obstructive jaundice secondary to pancreatic and periampullary malignancy--implications for timing of resectional surgery and use of biliary drainage

Background. Routine preoperative biliary drainage in cases of jaundice secondary to pancreatobiliary malignancy is associated with a significant risk of complications, failure and stent occlusion. It may be possible to avoid biliary drainage in those patients who are not deeply jaundiced. Aims. To measure presenting serum bilirubin and its rate of increase in patients with malignant obstructive jaundice. To predict the urgency with which surgery should be performed to avoid preoperative biliary drainage. Patients and methods. Prospective data collection for all pancreatic and periampullary malignancies over a period of 18 months was carried out. Serum bilirubin levels before successful drainage were recorded. Rates of increase in bilirubin and the number of days for bilirubin to reach different thresholds were calculated. Results. Of 111 patients, 66 (59%) had resectable disease on imaging investigations. Median serum bilirubin on presentation was 160 µmol/l. Median increase was 13.1 µmol/l/day or approximately 100 µmol/l/week. The predicted number of days for bilirubin levels to reach a variety of thresholds varied significantly. For a patient presenting with a serum bilirubin of 160 µmol/l, the mean number of days for it to rise to 200 µmol/l, 300 µmol/l, 400 µmol/l and 500 µmol/l was 3, 13, 22 and 31 days, respectively. Conclusions. There is a variable window of opportunity in jaundiced patients with pancreatic and periampullary malignancy during which surgery may be performed to avoid biliary drainage procedures, depending on the threshold for operating on the jaundiced patient.     

Mucobilia: current aspects in the management of a rare cause of malignant biliary obstruction

Mucobilia is a rare pathologic condition characterized by the abnormal secretion and accumulation of abundant mucus within the biliary tree. It is usually seen in association with mucin-producing hepatobiliary and pancreatic tumors. Neoplastic transformation of these tumors can range from low-grade dysplasia to invasive adenocarcinoma. Mucobilia usually presents with signs and symptoms of biliary obstruction, which may span from jaundice to cholangitis with progression to septic complications in severe cases. Occurrence of hepatolithiasis has also been attributed to mucobilia, which raises the concern of an increased risk for the development of cholangiocarcinoma. Precise radiological evaluation and detailed histopathological tissue diagnosis followed by execution of appropriate surgical therapy is vital in the integrated management of mucin-producing biliary neoplasms. This review will address the etiologies and symptomatology of mucobilia as well as discuss current aspects in the management of mucobilia and its causative etiologies.