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1Portal vein thrombosis in liver cirrhosis显示文摘Portal vein thrombosis(PVT) is considered to be a frequent complication of liver cirrhosis. However, unlike PVT in patients without cirrhosis, very few data are available on the natural history and management of PVT in cirrhosis, despite its association with potentially life-threatening conditions, such as gastroesophageal bleeding and acute intestinal ischemia. Moreover, no consensus regarding PVT in cirrhosis exists. Suggested causes of PVT in cirrhosis include reduced portal blood flow velocity, multiple congenital or acquired thrombophilic factors, inherited or acquired conditions, and derangement of liver architecture. However, the understanding of PVT in cirrhosis is incomplete. In addition, information on the management of PVT in cirrhosis is inadequate. The aims of this review are to:(1) assemble data on the physiopathological mechanism, clinical findings, diagnosis and management of PVT in cirrhosis;(2) describe the principal factors most frequently involved in PVT development; and(3) summarize the recent knowledge concerning diagnostic and therapeutic procedures.Nao Kinjo Hirofumi Kawanaka Tomohiko Akahoshi Yoshi-hiro Matsumoto Masahiro Kamori Yoshihiro Nagao Naotaka Hashimoto Hideo Uehara Morimasa Tomikawa Ken Shirabe Yoshihiko Maehara 2014World Journal of Hepatology2014,6,2:38
2Relationship between post-ERCP pancreatitis and the change of serum amylase level after the procedure显示文摘AIM: To clarify the relationship between the change of serum amylase level and post-ERCP pancreatitis. METHODS: Between January 1999 and December 2002, 1291 ERCP-related procedures were performed. Serum amylase concentrations were measured before the procedure and 3, 6, and 24 h afterward. The frequency and severity of post-ERCP pancreatitis and the relationship between these phenomena and the change in amylase level were estimated. RESULTS: Post-ERCP pancreatitis occurred in 47 patients (3.6%). Pancreatitis occurred in 1% of patients with normal amylase levels 3 h after ERCP, and in 1%, 5%, 20%, 31% and 39% of patients with amylase levels elevated 1-2 times, 2-3 times, 3-5 times, 5-10 times and over 10 times the upper normal limit at 3 h after ERCP, respectively (level < 2 times vs ≥ 2 times, P < 0.001). Of the 143 patients with levels higher than the normal limit at 3 h after ERCP followed by elevation at 6 h, pancreatitis occurred in 26%. In contrast, pancreatitis occurred in 9% of 45 patients with a level higher than two times the normal limit at 3 h after ERCP followed by a decrease at 6 h (26% vs 9%, P < 0.05). CONCLUSION: Post-ERCP pancreatitis is frequently associated with an increase in serum amylase level greater than twice the normal limit at 3 h after ERCP with an elevation at 6 h. A decrease in amylase level at 6 h after ERCP suggests the unlikelihood of development of post-ERCP pancreatitis.Kei Ito Naotaka Fujita Yutaka Noda Go Kobayashi Jun Horaguchi Osamu Takasawa Takashi Obana 2007World Journal of Gastroenterology2007,13,28:19
3Characteristics and prognosis of synchronous multiple early gastric cancer显示文摘AIM:To assess the clinicopathologic characteristics,risk factors,and prognosis for synchronous multiple early gastric cancer(SMGC).METHODS:A total of 146 patients with SMGC and1194 patients with single gastric cancer who had undergone gastrectomy between 1989 and 2008 were retrospectively analyzed to determine their clinicopathologic characteristics and postoperative survival.Tumors were classified into groups on the basis of location and histology.Smoking habits were evaluated using the Brinkman index.Clinical and pathological factors were compared using either Fisher’s exact test or Pearson’sχ2test.Logistic regression analysis was performed to identify independent risk factors.Survival rate was calculated using the Kaplan-Meier method.RESULTS:SMGCs accounted for 10.9%of gastric cancer cases and occurred predominantly in elderly male patients with a family history of gastric cancer who were both smokers and drinkers.These tumors were typically macroscopically elevated and histologically differentiated.There were no significant differences between SMGC and single gastric cancer patients with respect to tumor location,tumor size,lymph node metastasis,the number of metastatic lymph nodes,venous invasion,or tumor stage(P=0.052,P=0.347,P=0.595,P=0.805,P=0.559,and P=0.408,respectively).Further,there was no significant difference in postoperative survival between the patient groups(P=0.200).Of the 146SMGC patients,a single patient had remnant cancer.CONCLUSION:A careful preoperative endoscopy is necessary for patients who are at high risk of SMGC,and minimally invasive treatment may be indicated in some cases.Taro Isobe Kousuke Hashimoto Junya Kizaki Naotaka Murakami Keishiro Aoyagi Kikuo Koufuji Yoshito Akagi Kazuo Shirouzu 2013World Journal of Gastroenterology2013,19,41:17
4Pancreatic guidewire placement for achieving selective biliary cannulation during endoscopic retrograde cholangio-pancreatography显示文摘AIM: To investigate the frequency and risk factors for acute pancreatitis after pancreatic guidewire placement (P-GW) in achieving cannulation of the bile duct during endoscopic retrograde cholangio-pancreatography (ERCP). METHODS: P-GW was performed in 113 patients in whom cannulation of the bile duct was difficult. The success rate of biliary cannulation, the frequency and risk factors of post-ERCP pancreatitis, and the frequency of spontaneous migration of the pancreatic duct stent were investigated. RESULTS: Selective biliary cannulation with P-GW was achieved in 73% of the patients. Post-ERCP pancreatitis occurred in 12% (14 patients: mild, 13; moderate, 1). Prophylactic pancreatic stenting was attempted in 59% of the patients. Of the 64 patients who successfully underwent stent placement, three developed mild pancreatitis (4.7%). Of the 49 patients without stent placement, 11 developed pancreatitis (22%: mild, 10; moderate, 1). Of the five patients in whom stent placement was unsuccessful, two developed mild pancreatitis. Univariate and multivariate analyses revealed no pancreatic stenting to be the only significant risk factor for pancreatitis. Spontaneous migration of the stent was observed within two weeks in 92% of the patients who had undergone pancreatic duct stenting.CONCLUSION: P-GW is useful for achieving selective biliary cannulation. Pancreatic duct stenting after P-GW can reduce the incidence of post-ERCP pancreatitis, which requires evaluation by means of prospective randomized controlled trials.Kei Ito Naotaka Fujita Yutaka Noda Go Kobayashi Takashi Obana Jun Horaguchi Osamu Takasawa Shinsuke Koshita Yoshihide Kanno 2008World Journal of Gastroenterology2008,14,36:14
5为用离合器切割器的食道的小粒的房间肿瘤的内视镜的 submucosal 解剖显示文摘 Endoscopic submucosal dissection (ESD) with a knife is a technically demanding procedure associated with a high complication rate.The shortcomings of this method are the deficiencies of fixing the knife to the target lesion,and of compressing it.These shortcomings can lead to major complications such as perforation and bleeding.To reduce the risk of complications related to ESD,we developed a new grasping type scissors forceps (Clutch Cutter,Fujifilm,Japan) which can grasp and incise the targeted tissue using an electrosurgical current.Esophagogastroduodenoscopy on a 59-year-old Japanese man revealed a 16mm esophageal submucosal nodule with central depression.Endoscopic ultrasonography demonstrated a hypoechoic solid tumor limited to the submucosa without lymph node involvement.The histologic diagnosis of the specimen obtained by biopsy was granular cell tumor.It was safely and accurately resected without unexpected incision by ESD using the CC.No delayed hemorrhage or perforation occurred.Histological examination confirmed that the granular cell tumor was completely excised with negative resection margin.We report herein a case of esophageal granular cell tumor successfully treated by an ESD technique using the CC.Keishi Komori Kazuya Akahoshi Yoshimasa Tanaka Yasuaki Motomura Masaru Kubokawa Soichi Itaba Terumasa Hisano Takashi Osoegawa Naotaka Nakama Risa Iwao Masafumi Oya Kazuhiko Nakamura 2012World Journal of Gastrointestinal Endoscopy2012,4,1:8
6Diffusion-weighted MRI in abdominal oncology:Clinical applications显示文摘Diffusion-weighted magnetic resonance imaging(DWI) provides image contrast that is different from that obtained by conventional magnetic resonance techniques.Although previously,DWI has been used to evaluate various diseases of the central nervous system,several technical advances have expanded the clinical applications of DWI beyond the central nervous system.As a result,many reports have been published on the use of DWI in abdominal diseases.Particularly,abdominal DWI has now being focused on evaluation of patients with abdominal cancer.DWI can be used for pretreatment tumor detection,characterization including predicting tumor response to therapy,monitoring tumor response during therapy,and follow-up study after treatment to detect possible tumor recurrence.Reiji Sugita Kei Ito Naotaka Fujita Shoki Takahashi 2010World Journal of Gastroenterology2010,16,7:8
7Gastric calcifying fibrous tumor removed by endoscopic submucosal dissection显示文摘The World Health Organization describes calcifying fibrous tumors(CFTs) as rare, benign lesions characterized by hypocellular, densely hyalinized collagenization with lymphoplasmacytic infiltration. These tumors rarely involve the gastrointestinal(GI) tract. A routine endoscopic upper gastrointestinal screen detected a 10-mm submucosal tumor(SMT) in the lesser curvature of the lower corpus of the stomach of an apparently healthy, 37-year-old woman with no history of Helicobacter pylori infection. Endoscopic ultrasonography(EUS) localized the internally isoechoic, homogeneous SMT mainly within the submucosa. Malignancy was ruled out using endoscopic submucosal dissection(ESD). A pathological examination confirmed complete resection of the SMT, and defined a hypocellular, spindle-cell tumor with a densely hyalinized, collagenous matrix, scattered lymphoplasmacytic aggregates as well as a few psammomatous, dystrophic calcified foci. The mass was immunohistochemically positive for vimentin and negative for CD117(c-kit protein), CD34, desmin, smooth muscle actin(SMA) and S100. Therefore, the histological findings were characteristic of a CFT. To date, CFT resection by ESD has not been described. This is the first case report of a gastric calcifying fibrous tumor being completely resected by ESD after endoscopic ultrasonography.Naotaka Ogasawara Shinya Izawa Mari Mizuno Atsushi Tanabe Tomonori Ozeki Hisatsugu Noda Emiko Takahashi Makoto Sasaki Toyoharu Yokoi Kunio Kasugai 2013World Journal of Gastrointestinal Endoscopy2013,5,9:8
8Efficacy of endoluminal gastroplication in Japanese patients with proton pump inhibitor-resistant,non-erosive esophagitis显示文摘AIM:To evaluate the efficacy,safety,and long-term outcomes of endoluminal gastroplication(ELGP) in patients with proton pump inhibitor(PPI)-resistant,nonerosive reflux disease(NERD).METHODS:The subjects were NERD patients,diagnosed by upper endoscopy before PPI use,who had symptoms such as heartburn or reflux sensations two or more times a week even after 8 wk of full-dose PPI treatment.Prior to ELGP,while continuing full-dose PPI medication,patients' symptoms and quality of life(QOL) were assessed using the questionnaire for the diagnosis of reflux disease,the frequency scale for symptoms of gastro-esophageal reflux disease(FSSG),gastrointestinal symptoms rating scale,a 36-item short-form.In addition,24-h esophageal pH monitoring or 24-h intraesophageal pH/impedance(MII-pH) monitoring was performed.The Bard EndoCinch TM was used for ELGP,and 2 or 3 plications were made.After ELGP,all acid reducers were temporarily discontinued,and medication was resumed depending on the development and severity of symptoms.Three mo after ELGP,symptoms,QOL,pH or MII-pH monitoring,number of plications,and PPI medication were evaluated.Further,symptoms,number of plications,and PPI medication were evaluated 12 mo after ELGP to investigate long-term effects.RESULTS:The mean FSSG score decreased significantly from before ELGP to 3 and 12 mo after ELGP(19.1 ± 10.5 to 10.3 ± 7.4 and 9.3 ± 9.9,P < 0.05,respectively).The total number of plications decreased gradually at 3 and 12 mo after ELGP(2.4 ± 0.8 to 1.2 ± 0.8 and 0.8 ± 1.0,P < 0.05,respectively).The FSSG scores in cases with no remaining plications and in cases with one or more remaining plications were 4.4 and 2.7,respectively,after 3 mo,and 2.0 and 2.8,respectively,after 12 mo,showing no correlation to plication loss.On pH monitoring,there was no difference in the percent time pH < 4 from before ELGP to 3 mo after.Impedance monitoring revealed no changes in the number of reflux episodes or the symptom index for reflux events from before ELGP to 3 mo after,but the symptom sensitivity index decreased significantly 3 mo after ELGP(16.1 ± 12.9 to 3.9 ± 8.3,P < 0.01).At 3 mo after ELGP,6 patients(31.6%) had reduced their PPI medication by 50% or more,and 11 patients(57.9%) were able to discontinue PPI medication altogether.After 12 mo,3 patients(16.7%) were able to reduce the amount of PPI medication by 50% or more,and 12 patients(66.7%) were able to discontinue PPI medication altogether.A high percentage of cases with remaining plications had discontinued PPIs medication after 3 mo,but there was no difference after 12 mo.No serious complications were observed in this study.CONCLUSION:ELGP was safe,resulted in significant improvement in subjective symptoms,and allowed less medication to be used over the long term in patients with PPI-refractory NERD.Kentaro Tokudome Yasushi Funaki Makoto Sasaki Shinya Izawa Yasuhiro Tamura Akihito Iida Naotaka Ogasawara Toshihiro Konagaya Yoshifumi Tokura Kunio Kasugai 2012World Journal of Gastroenterology2012,18,41:5
9Pathophysiology of functional heartburn based on Rome Ⅲ criteria in Japanese patients显示文摘AIM:To investigate the pathophysiology of functional heartburn(FH) in Japanese patients.METHODS:A total of 111 patients with proton pump inhibitor(PPI)-refractory non-erosive gastroesophageal reflux disease underwent intraesophageal pressure testing and 24-h multichannel intraluminal impedancep H(24MII-p H) testing.The patients also completed several questionnaires while they were receiving the PPI treatment, including the questionnaire for the diagnosis of reflux disease(QUEST), the frequency scale for the symptoms of gastroesophageal reflux disease(FSSG), the gastrointestinal symptoms rating scale(GSRS), SF-36, and the Cornell Medical Index(CMI).The subjects were classified into FH and endoscopy-negative reflux disease(ENRD) groups based on the Rome Ⅲ criteria.RESULTS:Thirty-three patients with esophageal motility disorder were excluded from this study, while 22 patients with abnormal esophageal acid exposure time(p H-POS) and 34 with hypersensitive esophagus(HE) were included in the ENRD group.The FH group included 22 patients with no reflux involvement.Sex, age, and body mass index did not differ significantly between the groups.The mean SF-36 values were < 50(normal) for all scales in these groups, with no significant differences.The GSRS scores in these groups were not different and showed overlap with other gastrointestinal symptoms.The QUEST and the FSSG scores did not differ significantly between the groups.Neuroticism was diagnosed using the CMI questionnaire in 17 of the 78 included subjects within the p H-POS(n=4),HE(n=8),and FH(n=5)groups,with no significant differences.CONCLUSION:Clinical characteristics of the FH and PPI-refractory ENRD groups were similar.Therefore,esophageal function should be examined via manometry and 24MII-p H testing to differentiate between them.Yasuhiro Tamura Yasushi Funaki Shinya Izawa Akihito Iida Yoshiharu Yamaguchi Kazunori Adachi Naotaka Ogasawara Makoto Sasaki Hiroshi Kaneko Kunio Kasugai 2015World Journal of Gastroenterology2015,21,16:4
10SSJD14101300023292显示文摘Shinya Sugimoto Hidetaka Yamada Masazumi Takahashi Yuichi Morohoshi Naotaka Yamaguchi Yuya Tsunoda Hiroyuki Hayashi Haruhiko Sugimura Hirokazu Komatsu 2014Gastric Cancer2014,,4:4
11Histological changes at an endosonography-guided biliary drainage site:A case report显示文摘Endosonography-guided biliary drainage (ESBD) is a new method enabling internal drainage of an obstructed bile duct. However,the histological conditions associated with fistula development via the duodenum to the bile duct have not been reported. We performed ESBD 14 d preoperatively in a patient with an ampullary carcinoma and histologically confirmed changes in and around the fistula. The female patient developed no complications relevant to ESBD. Levels of serum bilirubin and hepatobiliary enzymes declined quickly,and pancreatoduodenectomy was carried out uneventfully. The resected specimen was sliced and stained with hematoxylin-eosin. Histological evaluation of the puncture site in the duodenum and bile-duct wall,and the sinus tract revealed no hematoma,bile leakage,or abscess in or around the sinus tract. Little sign of granulation,fibrosis,and inflammatory cell infiltration was observed. Although further large-scale confirmatory studies are needed,the findings here may encourage more active use of ESBD as a substitute for percutaneous transhepatic drainage in cases with failed/difficult endoscopic biliary stenting.Naotaka Fujita Yutaka Noda Go Kobayashi Kei Ito Takashi Obana Jun Horaguchi Osamu Takasawa Kazunari Nakahara 2007World Journal of Gastroenterology2007,13,41:4
12红细胞的功能及血液保存显示文摘红细胞无核,糖酵解是红细胞产能的唯一途径.红细胞非常柔软且循环快,能很快通过毛细管运送氧到全身,一个细胞通过肺部毛细管只需大约千分之一秒的时间.不同种属的红细胞寿命不同,然而,猫、狗、人类通过心脏往复循环的红细胞数量事实上是相等的,约2×105.细胞死亡的信号大概来自于细胞膜的改变,如:累积的损害使膜脆性增加;抗原暴露后结合免疫球蛋白,使红细胞被巨噬细胞吞噬.红细胞能在液态保存相对较长时间.1940年代建立的血液保存方法仍在沿用.但是,由于没有侧重于红细胞在保存期的功能,所以,输血后的存活率及携氧能力均下降,因此,开展更有效的血液贮存方法是十分必要的.本文描述了红细胞的携氧作用以及评估保存红细胞携氧量的方法,讨论增加保存的红细胞较之新鲜血液(活性红细胞)有较高水平携氧量的可能性.Naotaka Hamasaki Masaki Yamamoto 张晓寒 唐银海 2001国外医学(输血及血液学分册)2001,24,6:3
13Carbon dioxide insufflation in esophageal endoscopic submucosal dissection reduces mediastinal emphysema: A randomized, double-blind, controlled trial显示文摘AIM To assess the efficacy of CO2 insufflation for reduction of mediastinal emphysema(ME) immediately after endoscopic submucosal dissection(ESD).METHODS A total of 46 patients who were to undergo esophageal ESD were randomly assigned to receive either CO2 insufflation(CO2 group, n = 24) or air insufflation(Air group, n = 22). Computed tomography(CT) was carried out immediately after ESD and the next morning. Pain and abdominal distention were chronologically recorded using a 100-mm visual analogue scale(VAS). The volume of residual gas in the digestive tract was measured using CT imaging. RESULTS The incidence of ME immediately after ESD in the CO2 group was significantly lower than that in the Air group(17% vs 55%, P = 0.012). The incidence of ME the next morning was 8.3% vs 32% respectively(P= 0.066). There were no differences in pain scores or distention scores at any post-procedure time points. The volume of residual gas in the digestive tract immediately after ESD was significantly smaller in the CO2 group than that in the Air group(808 m L vs 1173 m L, P = 0.013).CONCLUSION CO2 insufflation during esophageal ESD significantly reduced postprocedural ME. CO2 insufflation also reduced the volume of residual gas in the digestive tract immediately after ESD, but not the VAS scores of pain and distention.Yuki Maeda Dai Hirasawa Naotaka Fujita Tetsuya Ohira Yoshihiro Harada Taku Yamagata Yoshiki Koike Kenjirou Suzuki 2016World Journal of Gastroenterology2016,22,32:3
14Inhibition of gastric perception of mild distention by omeprazole in volunteers显示文摘AIM:To evaluate the effects of omeprazole on gastric mechanosensitivity in humans. METHODS:A double lumen polyvinyl tube with a plastic bag was introduced into the stomach of healthy volunteers under fluorography and connected to a barostat device. Subjects were then positioned so they were sitting comfortably, and the minimal distending pressure (MDP) was determined after a 30-min adaptation period. Isobaric distensions were performed in stepwise increments of 2 mmHg (2 min each) starting from the MDP. Subjects were instructed to score feel-ings at the end of every step using a graphic rating scale:0, no perception; 1, weak/vague; 2, weak but significant; 3, moderate/vague; 4, moderate but signifi-cant; 5, severe discomfort; and 6, unbearable pain. After this first test, subjects received omeprazole (20 mg, after dinner) once daily for 1 wk. A second test was performed on the last day of treatment. RESULTS:No adverse effects were observed. Mean MDP before and after treatment was 6.3 ± 0.3 mmHg and 6.2 ± 0.5 mmHg, respectively. One subject before and 2 after treatment did not reach a score of 6 at the maximum bag volume of 750 mL. After omeprazole, there was a significant increase in the distension pres-sure required to reach scores of 1 (P = 0.019) and 2 (P = 0.017) as compared to baseline. There were no changes in pressure required to reach the other scores after treatment. Two subjects before and one after omeprazole rated their abdominal feeling < 1 at MDP, and mean (± SE) abdominal discomfort scores at MDP were 0.13 ± 0.09 and 0.04 ± 0.04, respectively. Mean scores induced by each MDP + 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 (mmHg) were 1.1 ± 0.3, 2.0 ± 0.4, 2.9 ± 0.5, 3.3 ± 0.4, 4.6 ± 0.3, 5.2 ± 0.3, 5.5 ± 0.2, 5.5 ± 0.3, 5.7 ± 0.3, and 5.4, respectively. After omepra-zole, abdominal feeling scores for the same incremental pressures over MDP were 0.3 ± 0.1, 0.8 ± 0.1, 2.0 ± 0.4, 2.8 ± 0.4, 3.8 ± 0.4, 4.6 ± 0.4, 4.9 ± 0.3, 5.4 ± 0.4, 5.2 ± 0.6, and 5.0 ± 1.0, respectively. A signif- icant decrease in feeling score was observed at intrabag pressures of MDP + 2 mmHg (P = 0.028) and + 4 mmHg (P = 0.013), respectively, after omeprazole. No significant score changes were observed at pres-sures ≥ MDP + 6 mmHg. CONCLUSION:Although the precise mechanisms are undetermined, the present study demonstrated that omeprazole decreases mechanosensitivity to mild gastric distension.Akihito Iida Hiroshi Kaneko Toshihiro Konagaya Yasushi Funaki Kentaro Tokudome Shinya Izawa Yasuhiro Tamura Mari Mizuno Naotaka Ogasawara Makoto Sasaki Kunio Kasugai 2012World Journal of Gastroenterology2012,18,39:3
15Rituximab, IVIG, and Plasma Exchange Without Graft Local Infusion Treatment: A New Protocol in ABO Incompatible Living Donor Liver Transplantation显示文摘Toru Ikegami Akinobu Taketomi Yuji Soejima Tomoharu Yoshizumi Hideaki Uchiyama Noboru Harada Tomohiro Iguchi Naotaka Hashimoto Yoshihiko Maehara 2009Transplantation2009,,3:2
16Impact of Antithrombin III Concentrates on Portal Vein Thrombosis After Splenectomy in Patients With Liver Cirrhosis and Hypersplenism显示文摘Hirofumi Kawanaka Tomohiko Akahoshi Nao Kinjo Kozou Konishi Daisuke Yoshida Go Anegawa Shohei Yamaguchi Hideo Uehara Naotaka Hashimoto Norifumi Tsutsumi Morimasa Tomikawa Yoshihiko Maehara 2010Annals of Surgery2010,,1:2
17Can pancreatic duct stenting prevent post-ERCP pancreatitis in patients who undergo pancreatic duct guidewire placement for achieving selective biliary cannulation? A prospective randomized controlled trial显示文摘Kei Ito Naotaka Fujita Yutaka Noda Go Kobayashi Takashi Obana Jun Horaguchi Osamu Takasawa Shinsuke Koshita Yoshihide Kanno Takahisa Ogawa 2010Journal of Gastroenterology2010,,11:2
18High b-value diffusion-weighted MRI for detecting gallbladder carcinoma: preliminary study and results显示文摘Reiji Sugita Tetsuro Yamazaki Akemi Furuta Kei Itoh Naotaka Fujita Shoki Takahashi 2009European Radiology2009,,7:2
19Fabrication and characterization of reinforced electrospun poly(vinylidene fluoride-co-hexafluoropropylene) nanofiber membranes显示文摘Naotaka Kimura Takeaki Sakumoto Yuki Mori Kai Wei Byoung-Suhk Kim Kyung-Hun Song Ick-Soo Kim 2013Composites Science and Technology2013,,:2
20Endoscopic biliary drainage for patients with unresectable pancreatic cancer with obstructive jaundice who are to undergo gemcitabine chemotherapy显示文摘AIM: To assess optimum endoscopic biliary drainage (EBD) in cases with unresectable pancreatic cancer in the era of gemcitabine (GEM). METHODS: Thirty patients with unresectable pancreatic cancer, who presented with jaundice and underwent chemotherapy using GEM after EBD were included in this study (GEM group). Fifteen cases with the same clinical manifestation and stage of pancreatic cancer treated with EBD alone were also included as controls. A covered metallic stent (CMS) or a plastic stent (PS) was used for EBD. The mean survival time (MST) in each group, risk factors of survival time, type of stent used and associated survival time, occlusion rate of stent, patency period of stent, and risk factors of stent occlusion were evaluated. RESULTS: MST in the GEM group was longer than that in the control (9.9 mo vs 6.2 mo). In the GEM group, the survival time was not different between those who underwent metallic stenting and those who underwent plastic stenting. Stent occlusion occurred in 60% of the PS group and 7% of the CMS group. The median stent patency in the PS-GEM group and the CMS-GEM group was 5 mo and 7.5 mo, respectively. Use of a PS was the only risk factor of stent occlusion. CONCLUSION: A CMS is recommended in cases presenting with jaundice due to unresectable pancreatic cancer, since the use of a CMS makes it possible to continue chemotherapy using GEM without repetition of stent replacement.Osamu Takasawa Naotaka Fujita Go Kobayashi Yutaka Noda Kei Ito Jun Horaguchi 2006World Journal of Gastroenterology2006,12,45:2
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