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| 1 | Angiogenesis and neuronal remodeling after ischemic stroke显示文摘Increased microvessel density in the peri-infarct region has been reported and has been correlated with longer survival times in ischemic stroke patients and has improved outcomes in ischemic animal models.This raises the possibility that enhancement of angiogenesis is one of the strategies to facilitate functional recovery after ischemic stroke.Blood vessels and neuronal cells communicate with each other using various mediators and contribute to the pathophysiology of cerebral ischemia as a unit.In this mini-review,we discuss how angiogenesis might couple with axonal outgrowth/neurogenesis and work for functional recovery after cerebral ischemia.Angiogenesis occurs within 4 to 7 days after cerebral ischemia in the border of the ischemic core and periphery.Post-ischemic angiogenesis may contribute to neuronal remodeling in at least two ways and is thought to contribute to functional recovery.First,new blood vessels that are formed after ischemia are thought to have a role in the guidance of sprouting axons by vascular endothelial growth factor and laminin/β1-integrin signaling.Second,blood vessels are thought to enhance neurogenesis in three stages:1)Blood vessels enhance proliferation of neural stem/progenitor cells by expression of several extracellular signals,2)microvessels support the migration of neural stem/progenitor cells toward the peri-infarct region by supplying oxygen,nutrients,and soluble factors as well as serving as a scaffold for migration,and 3)oxygenation induced by angiogenesis in the ischemic core is thought to facilitate the differentiation of migrated neural stem/progenitor cells into mature neurons.Thus,the regions of angiogenesis and surrounding tissue may be coupled,representing novel treatment targets. | Masahiro Hatakeyama Itaru Ninomiya Masato Kanazawa | 2020 | Neural Regeneration Research2020，15，1： | 63 |
| 2 | Regional lymphadenectomy for gallbladder cancer: Rational extent, technical details, and patient outcomes显示文摘AIM: To define the rational extent of regional lymphadenectomy for gallbladder cancer and to clarify its effect on long-term survival. METHODS: A total of 152 patients with gallbladder cancer who underwent a minimum of 'extended' portal lymph node dissection (defined as en bloc removal of the first-and second-echelon nodes) from 1982 to 2010 were retrospectively analyzed. Based on previous studies, regional lymph nodes of the gallbladder were divided into first-echelon nodes (cystic duct or pericholedochal nodes), second-echelon nodes (node groups posterosuperior to the head of the pancreas or around the hepatic vessels), and more distant nodes. RESULTS: Among the 152 patients (total of 3352 lymph nodes retrieved, median of 19 per patient), 79 patients (52%) had 356 positive nodes. Among nodepositive patients, the prevalence of nodal metastasis was highest in the pericholedochal (54%) and cystic duct (38%) nodes, followed by the second-echelon node groups (29% to 19%), while more distant node groups were only rarely (5% or less) involved. Disease-specific survival after R0 resection differed according to the nodal status (P < 0.001): most node-negative patients achieved long-term survival (median, not reached; 5-year survival, 80%), whereas among nodepositive patients, 22 survived for more than 5 years (median, 37 mo; 5-year survival, 43%). CONCLUSION: The rational extent of lymphadenectomy for gallbladder cancer should include the first-and second-echelon nodes. A considerable proportion of node-positive patients benefit from such aggressive lymphadenectomy. | Yoshio Shirai Toshifumi Wakai Jun Sakata Katsuyoshi Hatakeyama | 2012 | World Journal of Gastroenterology2012，18，22： | 35 |
| 3 | Catheter tract implantation metastases associated with percutaneous biliary drainage for extrahepatic cholangiocarcinoma显示文摘AIM: To estimate the incidence of catheter tract implantation metastasis among patients undergoing percutaneous transhepatic biliary drainage (PTBD) for extrahepatic cholangiocarcinoma, and to provide data regarding the management of this unusual complication of PTBD by reviewing cases reported in the literature.METHODS: A retrospective analysis of 67 consecutive patients who underwent PTBD before the resection of extrahepatic cholangiocarcinoma was conducted. The median follow-up period after PTBD was 106 mo. The English language literature (PubMed, National Library of Medicine, Bethesda, MD, USA), from January 1966through December 2004, was reviewed.RESULTS: Catheter tract implantation metastasis developed in three patients. The cumulative incidence of implantation metastasis reached a plateau (6%)at 20 mo after PTBD. All of the three patients with implantation metastasis died of tumor progression at 3, 9, and 20 mo after the detection of this complication. Among the 10 reported patients with catheter tract implantation metastasis from extrahepatic cholangiocarcinoma (including our three patients), two survived for more than 5 years after the excision of isolated catheter tract metastases.CONCLUSION: Catheter tract implantation metastasis is not a rare complication following PTBD for extrahepatic cholangiocarcinoma. Although the prognosis for patients with this complication is generally poor, the excision of the catheter tract may enable survival in selected patients with isolated metastases along the catheter tract. | Jun Sakata Yoshio Shirai Toshifumi Wakai Tatsuya Nomura Eiko Sakata Katsuyoshi Hatakeyama | 2005 | World Journal of Gastroenterology2005，11，44： | 31 |
| 4 | Molecular anatomy and pathogenic actions of Helicobacter pylori CagA that underpin gastric carcinogenesis显示文摘Chronic infection with Helicobacter pylori cagA-positive strains is the strongest risk factor for gastric cancer.The cagA gene product,CagA,is delivered into gastric epithelial cells via the bacterial type IV secretion system.Delivered CagA then undergoes tyrosine phosphorylation at the Glu-Pro-Ile-Tyr-Ala(EPIYA)motifs in its C-terminal region and acts as an oncogenic scaffold protein that physically interacts with multiple host signaling proteins in both tyrosine phosphorylation-dependent and-independent manners.Analysis of CagA using in vitro cultured gastric epithelial cells has indicated that the nonphysiological scaffolding actions of CagA cell-autonomously promote the malignant transformation of the cells by endowing the cells with multiple phenotypic cancer hallmarks:sustained proliferation,evasion of growth suppressors,invasiveness,resistance to cell death,and genomic instability.Transgenic expression of CagA in mice leads to in vivo oncogenic action of CagA without any overt inflammation.The in vivo oncogenic activity of CagA is further potentiated in the presence of chronic inflammation.Since Helicobacter pylori infection triggers a proinflammatory response in host cells,a feedforward stimulation loop that augments the oncogenic actions of CagA and inflammation is created in CagA-injected gastric mucosa.Given that Helicobacter pylori is no longer colonized in established gastric cancer lesions,the multistep nature of gastric cancer development should include a“hit-and-run”process of CagA action.Thus,acquisition of genetic and epigenetic alterations that compensate for CagA-directed cancer hallmarks may be required for completion of the“hit-and-run”process of gastric carcinogenesis. | Atsushi Takahashi-Kanemitsu Christopher T.Knight Masanori Hatakeyama | 2020 | Cellular & Molecular Immunology2020，17，1： | 25 |
| 5 | ^(11)C-methionine (MET) and ^(18)F-fluorothymidine (FLT) PET in patients withnewly diagnosed glioma显示文摘Eur J Nucl Med Mol Imaging. 2008 Jun 10.PURPOSE: The purpose of this prospective study was to clarify the individual and combined role of L: -methyl-(11)C-methionine-positron emission tomography (MET-PET) and 3' -deoxy-3' -[(18)F]fluorothymidine (FLT)-PET in tumor detection,noninvasive grad-ing, and assessment of the cellular proliferation rate in newly diagnosed histologically verified gliomas of different grades. MATERI- | Hatakeyama T Kawai N Nishiyama Y Yamamoto Y Sasakawa Y Ichikawa T Tamiya T | 2008 | 中国神经肿瘤杂志2008，6，2： | 11 |
| 6 | 'Extended' radical cholecystectomy for gallbladder cancer:Long-term outcomes, indications and limitations显示文摘AIM:To delineate indications and limitations for 'ex tended' radical cholecystectomy for gallbladder cancer:a procedure which was instituted in our department in 1982. METHODS:Of 145 patients who underwent a radi cal resection for gallbladder cancer from 1982 through 2006, 52 (36%) had an extended radical cholecystec tomy, which involved en bloc resection of the gallblad der, gallbladder fossa, extrahepatic bile duct, and the regional lymph nodes (first-and second-echelon node groups). A retrospective analysis of the 52 patients was conducted including at least 5 years of follow up. Residual tumor status was judged as no residual tumor (R0) or microscopic/macroscopic residual tumor (R1 2). athological findings were documented according tothe American Joint Committee on Cancer Cancer Stag ing anual (7th edition). RESULTS:he primary t mor as classified as patho-logical T1 (pT1) in 3 patients, pT2 in 36, pT3 in 12, and pT4 in 1. Twenty three patients had lymph node metastases; 11 had a single positive node, 4 had two positive nodes, and 8 had three or more positive nodes. None of the three patients with pT1 tumors had nodal disease, whereas 23 of 49 (47%) with pT2 or more advanced tumors had nodal disease. One patient died during the hospital stay for definitive resection, giv ing an in hospital mortality rate of 2%. Overall survival (OS) after extended radical cholecystectomy was 65% at 5 years and 53% at 10 years in all 52 patients. OS differed according to the p classification ( < 0.001) and the nodal status ( = 0.010). All of 3 patients with pT1 tumors and most (29 of 36) patients with pT2 tu mors survived for more than 5 years. Of 12 patients with pT3 tumors, 8 who had an R1 2 resection, distant metastasis, or extensive extrahepatic organ involve ment died soon after resection. Of the remaining four pT3 patients who had localized hepatic spread through the gallbladder fossa and underwent an R0 resection, 2 survived for more than 5 years and another survived for 4 years and 2 mo. The only patient with pT4 tumor died of disease soon after resection. Among 23 node positive patients, 11 survived for more than 5 years, and of these, 10 had a modest degree of nodal disease (one or two positive nodes). CONCLUSION:Extended radical cholecystectomy is indicated for pT2 tumors and some pT3 tumors with localized hepatic invasion, provided that the regional nodal disease is limited to a modest degree (up to two positive nodes). Extensive pT3 disease, pT4 disease, or marked nodal disease appears to be beyond the scope of this radical procedure. | Yoshio Shirai Jun Sakata Toshifumi Wakai Taku Ohashi Katsuyoshi Hatakeyama | 2012 | World Journal of Gastroenterology2012，18，34： | 11 |
| 7 | Contrast-enhanced intraoperative ultrasonography equipped with late Kupffer-phase image obtained by sonazoid in patients with colorectal liver metastases显示文摘AIM: To find occult metastases during hepatectomy in patients with colorectal cancer liver metastases (CRCLM), contrast-enhanced intraoperative ultrasonography (CE-IOUS) was performed using a new microbubble agent, sonazoid, which provides a parenchyma-specific contrast image based on its accumulation in the Kupffer cells. METHODS: Eight patients with CRCLM underwent CE- IOUS using sonazoid before hepatectomy. The liver was investigated during a late Kupffer-phase imaging, which is a valuable characteristic of sonazoid. RESULTS: CE-IOUS using sonazoid provided the early vascular- and sinusoidal-phase images for 10 min followed by the late Kupffer-phase image up to 30 min after the injection of sonazoid. IOUS did not provide new findings of metastatic lesion in the 8 patients. However, during the late Kupffer-phase image of sonazoid, a metastatic lesion was newly found in two of the 8 patients. These newly detected lesions were removed by an additional hepatectomy and histopathologically diagnosed as a metastasis. CONCLUSION: CE-IOUS using sonazoid can allow surgeons to investigate the whole liver with enough time and to find new metastases intraoperatively. | Hiroshi Nakano Yasuo Ishida Toshiyuki Hatakeyama Kazuma Sakuraba Masahiro Hayashi Osamu Sakurai Kiyoshi Hataya | 2008 | World Journal of Gastroenterology2008，14，20： | 10 |
| 8 | Genetic changes of p53,K-ras,and microsatellite instability in gallbladder carcinoma in high-incidence areas of Japan and Hungary显示文摘AIM: To disclose geographic differences in genetic changes involved in gallbladder carcinogenesis between two distinct high-incidence areas of Japan and Hungary.METHODS: We examined 42 cases of gallbladder carcinoma: 22 Japanese and 20 Hungarian cases. p53 mutations at exons 5 to 8 and K-ras mutations at codon 12 were tested by direct sequencing. Microsatellite instability was determined from fluorescent dye-labeled PCR amplifications of five-microsatellite markers (BAT-25, BAT-26, D2S123, D5S346, and D17S250).RESULTS: Mutations of p53 were detected in 11 of 22 Japanese cases and 6 of 18 Hungarian cases (11/22 vs 6/18, P = 0.348). Transition at CpG sites was found in none of 11 Japanese cases and 2 of 6 Hungarian cases; the difference was marginally significant (0/11 vs 2/6, P = 0.110). K-ras mutations were detected in only one of the Hungarian cases. Eight of 19 (42.1%) Japanese cases were MSI-high (presence of novel peaks in more than one of the five loci analyzed), whereas only 1 of 15 (6.7%) Hungarian cases was MSI-high (P = 0.047).CONCLUSION: It appears that the p53 mutations and MSI differ in patients with gallbladder carcinoma between two distinct high-incidence areas. Geographic variation might exist in the process of gallbladder carcinogenesis. | Masayuki Nagahashi Yoichi Ajioka Istvan Lang Zoltan Szentirmay Miklos Kasler Hiroto Nakadaira Naoyuki Yokoyama Gen Watanabe Ken Nishikura Toshifumi Wakai Yoshio Shirai Katsuyoshi Hatakeyama Masaharu Yamamoto | 2008 | World Journal of Gastroenterology2008，14，1： | 9 |
| 9 | Inhibitory effects of carbon dioxide insufflation on pneumoperitoneum and bowel distension after percutaneous endoscopic gastrostomy显示文摘AIM:To evaluate the inhibitory effects of carbon dioxide (CO2) insufflation on pneumoperitoneum and bowel distension after percutaneous endoscopic gastrostomy (PEG).METHODS:A total of 73 consecutive patients who were undergoing PEG were enrolled in our study.After eliminating 13 patients who fitted our exclusion criteria,60 patients were randomly assigned to either CO2 (30 patients) or air insufflation (30 patients) groups.PEG was performed by pull-through technique after threepoint fixation of the gastric wall to the abdominal wall using a gastropexy device.Arterial blood gas analysis was performed immediately before and after the procedure.Abdominal X-ray was performed at 10 min and at 24 h after PEG to assess the extent of bowel distension.Abdominal computed tomography was performed at 24 h after the procedure to detect the presence of pneumoperitoneum.The outcomes of PEG for 7 d postprocedure were also investigated.RESULTS:Among 30 patients each for the air and the CO2 groups,PEG could not be conducted in 2 patients of the CO2 group,thus they were excluded.Analyses of the remaining 58 patients showed that the patients' backgrounds were not significantly different between the two groups.The elevation values of arterial partial pressure of CO2 in the air group and the CO2 group were 2.67 mmHg and 3.32 mmHg,respectively (P = 0.408).The evaluation of bowel distension on abdominal X ray revealed a significant decrease of small bowel distension in the CO2 group compared to the air group (P < 0.001) at 10 min and 24 h after PEG,whereas there was no significant difference in large bowel distension between the two groups.Pneumoperitoneum was observed only in the air group but not in the CO2 group (P = 0.003).There were no obvious differences in the laboratory data and clinical outcomes after PEG between the two groups.CONCLUSION:There was no adverse event associated with CO2 insufflation.CO2 insufflation is considered to be safer and more comfortable for PEG patients because of the lower incidence of pneumoperitoneum and less distension of the small bowel. | Shinji Nishiwaki Hiroshi Araki Motoshi Hayashi Jun Takada Masahide Iwashita Atsushi Tagami Hiroo Hatakeyama Takao Hayashi Teruo Maeda Koshiro Saito | 2012 | World Journal of Gastroenterology2012，18，27： | 7 |
| 10 | Endobronchial metastasis from adenocarcinoma of gastric cardia 7 years after potentially curable resection显示文摘Endobronchial metastasis(EBM) is a rare form of metas-tasis from extrapulmonary malignant tumors,although there are few reports of EBM from gastric cancer specifically.We report the case of a 51-year-old woman who had undergone gastrectomy for advanced gastric cancer seven years previously but was diagnosed with a solitary lung tumor by follow-up computed tomography.On diagnosis of primary lung cancer,she underwent pulmonary lobectomy,but immunohistochemical examination confirmed the resected tumor to be an EBM from the gastric cancer.Six months later,she was diagnosed with peritoneal metastases and underwent chemotherapy with gastric cancer regimen.She is still alive at 33 mo after the lobectomy.Generally,the prognosis for EBM is poor although multidisciplinary treatment can lead to long-term survival.Precise diagnosis on the basis of detailed pathological and immunohistochemical evaluation can contribute to deciding the most effective treatment and improving prognosis. | Takaaki Hanyu Tatsuo Kanda Atsushi Matsuki Go Hasegawa Kazuhito Yajima Masanori Tsuchida Shin-ichi Kosugi Makoto Naito Katsuyoshi Hatakeyama | 2010 | World Journal of Gastrointestinal Surgery2010，2，8： | 7 |
| 11 | Low preoperative platelet counts predict a high mortality after partial hepatectomy in patients with hepatocellular carcinoma显示文摘AIM: To assess the validity of our selection criteria for hepatectomy procedures based on indocyanine green disappearance rate (KICG), and to unveil the factors affecting posthepatectomy mortality in patients with hepatocellular carcinoma (HCC).METHODS: A retrospective analysis of 198 consecutive patients with HCC who underwent partial hepatectomies in the past 14 years was conducted. The selection criteria for hepatectomy procedures during the study period were KICG≥0.12 for hemihepatectomy, KICG≥0.10 for bisegmentectomy, KICG≥0.08 for monosegmentectomy, and KICG ≥0.06 for nonanatomic hepatectomy. The hepatectomies were categorized into three types: major hepatectomy (hemihepatectomy or a more extensive procedure),bisegmentectomy, and limited hepatectomy. Univariate (Fishers exact test) and multivariate (the logistic regression model) analyses were used.RESULTS: Postoperative mortality was 5% after major hepatectomy, 3% after bisegmentectomy, and 3% after limited hepatectomy. The three percentages were comparable (P = 0.876). The platelet count of ≤ 10x 104/μL was the strongest independent factor for postoperative mortality on univariate (P = 0.001) and multivariate (risk ratio,12.5; P= 0.029) analyses. No patient with a platelet count of >7.3x 104/μL died of postoperative morbidity, whereas 25% (6/24 patients) of patients with a platelet count of ≤7.3x 104/μL died (P<0.001).CONCLUSION: The selection criteria for hepatectomy procedures based on KICG are generally considered valid,because of the acceptable morbidity and mortality with these criteria. The preoperative platelet count independently affects morbidity and mortality after hepatectomy, suggesting that a combination of KICG and platelet count would further reduce postoperative mortality. | Kazuhiro Kaneko Yoshio Shirai Toshifumi Wakai Naoyuki Yokoyama Kohei Akazawa Katsuyoshi Hatakeyama | 2005 | World Journal of Gastroenterology2005，11，37： | 7 |
| 12 | Selective decrease in colonic CD56^+ T and CD161^+ T cells in the inflamed mucosa of patients with ulcerative colitis显示文摘AIM: To investigate the role of local colonic mucosal NK receptor-positive T (NKR+ T) cells in the regulation of intestinal inflammation, we analyzed the population and function of these cells in ulcerative colitis (UC). METHODS: Colonic mucosal tissues were obtained from colonoscopic biopsies of the descending colon from 96 patients with UC (51 endoscopically uninfl amed, 45 inflamed) and 18 normal controls. Endoscopic appearance and histologic score at the biopsied site were determined by Matts’ classification. A single cell suspension was prepared from each biopsy by collagenase digestion. Two NKR+ T cell subsets, CD56+ (CD56+CD3+) T cells and CD161+ (CD161+CD3+) T cells, were detected by flow cytometric analysis. Intracellular cytokine analysis for anti-in? ammatory cytokine interleukin-10 (IL-10) was performed by in vitro stimulation with phorbol-myristate- acetate (PMA) and ionomycin. RESULTS: CD56+ T cells and CD161+ T cells are present in the normal human colon and account for 6.7% and 21.3% of all mononuclear cells, respectively. The populations of both CD56+ T cells and CD161+ T cells were decreased significantly in the inflamed mucosa of UC. In contrast, the frequency of conventional T cells (CD56-CD3+ cells and CD161-CD3+ cells) was similar among the patient and control groups. The populations of NKR+ T cells were correlated inversely with the severity of infl ammation, which was classif ied according to the endoscopic and histologic Matts’ criteria. Interestingly, approximately 4% of mucosal NKR+ T cells expressing IL-10 were detected by in vitro stimulation with PMA and ionomycin.CONCLUSION: Selective reduction in the population of colonic mucosal NKR+T cells may contribute to the development of intestinal inflammation in UC. | Masaru Shimamoto Yoshitaka Ueno Shinji Tanaka Toshiko Onitake Rie Hanaoka Kyoko Yoshioka Tsuyoshi Hatakeyama Kazuaki Chayama | 2007 | World Journal of Gastroenterology2007，13，45： | 6 |
| 13 | Risk factors and prevention of biliary anastomotic complications in adult living donor liver transplantation显示文摘AIM: To evaluate risk factors of biliary anastomotic complications (BACs) and outcomes according to type of biliary reconstruction. METHODS: A total of 33 consecutive adult living donor liver transplantation (LDLT) were reviewed, 17 of which had undergone Duct-to-Duct anastomosis (D-D). The remaining 16 patients received Roux-en-Y anastomosis (R-Y). The perioperative factors, such as the type of graft and the number of graft bile ducts, were analyzed retrospectively. RESULTS: The overall incidence of BACs was 39.4%. The incidence of BACs was significantly higher in the patients with than without neoadjuvant chemotherapy (71.4% vs 10%, P = 0.050). There was no signifi cant difference in the incidence of biliary leakage in patients with D-D vs those with R-Y. The incidence of biliary strictures following the healing of biliary leakage was significantly higher in D-D (60%) than in R-Y (0%) (P = 0.026). However, the incidence of BACs related bacteremia was signifi cantly higher in R-Y than in D-D (71.4% vs 0%, P = 0.008). In D-D, use of T-tube stent remarkably reduced the incidence of BACs, compared with straight tube stent (0% vs 50%, P = 0.049). CONCLUSION: Our experience showed an increase of BACs related bacteremia in the patients with R-Y. Therefore, D-D might be a preferred biliary reconstruction. However, the surgical refi nement of D-D should be required because of the high incidence of biliary strictures. Use of the T-tube stent might lead to a signifi cant reduction of BACs in D-D. | Satoshi Yamamoto Yoshinobu Sato Hiroshi Oya Hideki Nakatsuka Takashi Kobayashi Yoshiaki Hara Takaoki Watanabe Isao Kurosaki Katsuyoshi Hatakeyama | 2007 | World Journal of Gastroenterology2007，13，31： | 6 |
| 14 | 考虑到亮度变化和颜色纯度的图像分割法(英文)显示文摘提出了一种新的考虑到亮度变化和颜色纯度的图像分割方法.使用HIS颜色空间来取得象素的颜色信息.当饱和度和亮度值较低时,色彩值会非常敏感,用颜色纯度作色彩值的加权值.不但考虑了像素的属性,还考虑了像素群的属性.图像先被分成块,块的平均值和方差值作为像素群的属性.用基于块的领域扩张来进行图像分割.用向量距离和相对位置信息把小的对象合并到大的对象中.实验结果证明。 | 迟志钢 木村敏文 山内健次 Hatakeyama贤一 | 2002 | 软件学报2002，13，5： | 5 |
| 15 | Narrow portion of the terminal choledochus is a cause of upstream biliary dilatation in patients with anomalous union of the pancreatic and biliary ducts显示文摘AIM: To clarify the pathogenesis of biliary dilatation associated with anomalous union of the pancreatic and biliary ducts (AUPBD).METHODS: Direct cholangiopancreatograms of 350 adult patients with or with suspicion of hepatobiliary or pancreatic disorders were reviewed. AUPBD was diagnosed cholangiopancreatographically, when the pancreaticobiliary ductal union was located above the narrow distal segment of the bile duct, which represents the action of the sphincter of Oddi. The narrow portion of the terminal choledochus was defined as symmetrical stricture of the common bile duct just above the pancreaticobiliary ductal union.RESULTS: AUPBD was found in 36 patients. Among cholangiopancreatographic features, the narrow portion of the terminal choledochus was the most pathognomonic for AUPBD (accuracy, 98%); it was present in 29 (81%)patients with AUPBD, but was not found in any patients without AUPBD. Among patients with AUPBD, biliary dilatation (>10 mm) was more frequent in those with the narrow portion of the terminal choledochus (23/29)than in those without (2/7; P = 0.018) AUPBD. Among the patients with both AUPBD and the narrow portion of the terminal choledochus, there was a strong negative correlation between the minimum diameter of the narrow portion and the maximum diameter of the choledochus (r = -0.78, P<0.001), suggesting that the degree of biliary narrowing at the narrow portion correlates with that of upstream biliary dilatation.CONCLUSION: The narrow portion of the terminal choledochus, a pathognomonic radiologic feature of AUPBD, may be a cause of biliary dilatation in patients with AUPBD. | Tatsuya Nomura Yoshio Shirai Toshifumi Wakai Naoyuki Yokoyama Jun Sakata Katsuyoshi Hatakeyama | 2005 | World Journal of Gastroenterology2005，11，41： | 5 |
| 16 | Possible role of human cytomegalovirus in pouchitis after proctocolectomy with ileal pouch-anal anastomosis in patients with ulcerative colitis显示文摘AIM: To detect the presence of human cytomegalovirus (HCMV) proteins and genes on the ileal pouch of patients with ulcerative colitis who have undergone proctocolectomy with ileal pouch-anal anastomosis (iPAA). METHODS: immunohistochemistry, polymerase chain reaction (PCR) and PCR sequencing methods were utilized to test the presence of HCMV in pouch specimens taken from 34 patients in 86 endoscopies. RESULTS: HCMV genes and proteins were detected in samples from 12 (35.2%) patients. The rate of detection was significant in the endoscopies from patients diagnosed with pouchitis (5 of 12, 41.6%), according to the Japanese classification of pouchitis, in comparison to patients with normal pouch (7 of 62, 11.2%; P = 0.021). in all patients with pouchitis in which the HCMV was detected, it was the first episode of pouchitis. The virus was not detected in previous biopsies taken in normal endoscopies of these patients. During the follow- up, HCMV was detected in one patient with recurrent pouchitis and in 3 patients whose pouchitis episodes improved but whose positive endoscopic findings persisted. CONCLUSION: HCMV can take part in the inflammatory process of the pouch in some patients with ulcerative colitis who have undergone proctocolectomy with iPAA. | Damian Casadesus Tatsuo Tani Toshifumi Wakai Satoshi Maruyama Tsuneo iiai Haruhiko Okamoto Katsuyoshi Hatakeyama | 2007 | World Journal of Gastroenterology2007，13，7： | 4 |
| 17 | Peroral cholangioscopy for non-invasive papillary cholangio-carcinoma with extensive superficial ductal spread显示文摘Papillary carcinoma arising from the extrahepatic bile duct often shows superficial ductal spread. We report herein the case of a patient with extensive superficial spread of non-invasive papillary cholangiocarcinoma,which was depicted with peroral cholangioscopy. A 65-year-old woman presented with the sudden-onset of severe epigastric pain. Ultrasonography revealed acute acalculous cholecystitis. Endoscopic retrograde cholangiography found small protruding lesions around the confluence of the cystic duct, suggestive of a cholangiocarcinoma. As the contour of the middle and upper bile ducts it was slightly irregular on the cholangiogram, the presence of superficial ductal spread was suspected. Peroral cholangioscopy revealed small papillary lesions around the confluence of the cystic duct and fine granular mucosal lesions in the middle and upper bile ducts and the right hepatic duct, suggesting a superficially spreading tumor. A right hepatectomy with bile duct resection was performed and no residual tumor was found. Histological examination revealed a non-invasive papillary carcinoma arising from the cystic duct with extensive superficial spread. Our experience of this case and a review of the literature suggest that a fine granular or fine papillary appearance of the ductal mucosae on cholangioscopy indicates superficial spread of papillary cholangiocarcinoma, for which peroral cholangioscopy is an efficient diagnostic option. | Toshifumi Wakai Yoshio Shirai Katsuyoshi Hatakeyama | 2005 | World Journal of Gastroenterology2005，11，41： | 3 |
| 18 | Recurrence pattern of squamous cell carcinoma of the thoracic esophagus after extended radical esophagectomy with three-field lymphadenectomy显示文摘 | Satoru Nakagawa Tatsuo Kanda Shin-ichi Kosugi Manabu Ohashi Tsutomu Suzuki Katsuyoshi Hatakeyama | 2004 | Journal of the American College of Surgeons2004，，2： | 3 |
| 19 | Perimuscular connective tissue contains more and larger lymphatic vessels than the shallower layers in human gallbladders显示文摘AIM: To clarify whether perimuscular connective tissuecontains more lymphatic vessels than the shallowerlayers in human gallbladders.METHODS: Lymphatic vessels were stainedimmunohistochemically with monoclonal antibody D2-40,which is a specific marker of lymphatic endothelium, inrepresentative sections of 12 normal human gallbladdersobtained at the time of resection for colorectal carcinomaliver metastases. In individual gallbladder specimens,nine high-power (× 200) fields with the highestlymphatic vessel density (LVD), termed 'hot spots', wereidentified for each layer (mucosa, muscle layer, andperimuscular connective tissue). In individual hot spots,the LVD and relative lymphatic vessel area (LVA) weremeasured microscopically using a computer-aided imageanalysis system. The mean LVD and LVA values for thenine hot spots in each layer were used for statisticalanalyses.RESULTS: In the mucosa, muscle layer, andperimuscular connective tissue, the LVD was 16.1 ± 9.2,35.4 ± 15.7, and 65.5 ± 12.2, respectively, and the LVAwas 0.4 ± 0.4, 2.1 ± 1.1, and 9.4 ± 2.6, respectively.Thus, both the LVD and LVA differed significantly (P <0.001 and P < 0.001, respectively; Kruskal-Wallis test)among the individual layers of the wall of the gallbladder,with the highest LVD and LVA values in the perimuscularconnective tissue. Most (98 of 108) of the hot spotswithin the perimuscular connective tissue were locatedwithin 500 μm of the lower border of the muscle layer.CONCLUSION: The perimuscular connective tissuecontains more and larger lymphatic vessels than the shallower layers in the human gallbladder. This observation partly explains why the incidence of lymph node metastasis is high in T2 (tumor invading the perimuscular connective tissue) or more advanced gallbladder carcinoma. | Masayuki Nagahashi Yoshio Shirai Toshifumi Wakai Jun Sakata Yoichi Ajioka Katsuyoshi Hatakeyama | 2007 | World Journal of Gastroenterology2007，13，33： | 3 |
| 20 | Surveillance and treatment for second primary cancer in the gastric tube after radical esophagectomy显示文摘 | Takeo Bamba Shin-ichi Kosugi Manabu Takeuchi Masaaki Kobayashi Tatsuo Kanda Atsushi Matsuki Katsuyoshi Hatakeyama | 2010 | Surgical Endoscopy2010，，6： | 2 |
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