Publications by authors named "Satoshi Kondo"

We report the case of a patient with pancreatic head cancer, whose replaced common hepatic artery (RCHA) arose from the superior mesenteric artery (SMA). We performed preoperative embolization of the RCHA, after which the liver blood flow was well maintained by the left gastric artery. The patient underwent a radical operation involving en bloc resection of the RCHA without any serious complications.

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Objective: Our objective was to perform a prospective study of surgical treatment of hilar cholangiocarcinoma according to newly established guidelines for performing safe and curative resections.

Summary Background Data: The poor survival rate after resection of hilar cholangiocarcinoma is considered to be mainly the result of in-hospital death and positive ductal margins.

Methods: Between July 1999 and December 2002, 40 of 42 surgically explored patients with hilar cholangiocarcinoma underwent resection.

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Purpose: The purpose of this research was to identify molecular clues to tumor progression and lymph node metastasis in esophageal cancer and to test their value as predictive markers.

Experimental Design: We explored the gene expression profiles in cDNA array data of a 36-tissue training set of esophageal squamous cell carcinoma (ESCC) by using generalized linear model-based regression analysis and a feature subset selection algorithm. By applying the identified optimal feature sets (predictive gene sets), we trained and developed ensemble classifiers consisting of multiple probabilistic neural networks combined with AdaBoosting to predict tumor stages and lymph node metastasis.

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Pigment epithelium-derived factor (PEDF) is expressed in several normal organs and identified as an inhibitor of neovascularization. In the present study, we screened the expression of PEDF immunohistochemically and investigated its correlation with clinicopathological features in patients who underwent surgery for ductal pancreatic adenocarcinoma. Of the 80 patients, 22 cases (27.

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Purpose: To clarify the role of hepatic resection in the surgical treatment of hilar bile duct carcinoma.

Methods: Between 1980 and 1997, 68 patients underwent surgery for hilar bile duct carcinoma. The patients were divided into a hepatectomy group ( n = 40) and a nonhepatectomized group ( n = 28) depending on whether they underwent resection of the bile duct confluence in combination with hepatectomy, or alone, respectively.

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Purpose: Stomach-preserving distal pancreatectomy with en bloc resection of the celiac, common hepatic, and left gastric arteries is a radical operation performed for locally advanced cancer of the pancreatic body. However, it is not known whether the collateral pathways that develop immediately from the superior mesenteric artery to the gastroduodenal and hepatic arteries provide sufficient blood flow to support the hepatobiliary system and the stomach. This article examines the ischemic gastropathy that can occur after this procedure and identifies the predisposing conditions.

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Selective hepatectomy under the guidance of hepatic venous drainage has not yet been developed because hepatic venous occlusion alone produces no visible congested area. Now that this area can be identified by simultaneous occlusion of the hepatic vein and artery, venous-drainage-guided selective hepatectomy is considered feasible. Because the congested area becomes dysfunctional or atrophic due to the absence of portal blood supply, it can be regarded as a first candidate for preventive resection in livers that may bear latent tumors.

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This study retrospectively examined the records of patients with clinical N2 (cN2) stage non-small cell lung cancer (NSCLC) who were surgically treated but who actually had pathologic N0 (pN0) stage disease. From 1982 to 1997, 94 patients with cN2 NSCLC underwent surgery. Forty-five patients proved to have pN0 disease, with an overall 5-year survival rate of 67.

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To characterize molecular mechanism involved in pancreatic carcinogenesis, we analysed gene-expression profiles of 18 pancreatic tumors using a cDNA microarray representing 23,040 genes. As pancreatic ductal adenocarcinomas usually contain a low proportion of cancer cells in the tumor mass, we prepared 95% pure populations of pancreatic cancer cells by means of laser microbeam microdissection, and compared their expression profiles to those of similarly purified, normal pancreatic ductal cells. We identified 260 genes that were commonly upregulated and 346 genes that were downregulated in pancreatic cancer cells.

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The VACTERL [vertebral defects (V), anal atresia (A), cardiac anomaly (C), tracheal-esophageal fistula with esophageal atresia (TE), renal defects (R), and radial limb dysplasia (L)] association can sometimes be diagnosed by ultrasonography and magnetic resonance imaging (MRI). Although the preaxial limb anomalies on ultrasonography were strongly associated with VACTERL association, the rate of limb anomalies is low. On ultrasonography, useful findings for prenatal diagnosis are a combination of esophageal atresia with hydramnion and renal anomalies.

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Background And Objectives: Tumor-infiltrating lymphocytes form an important aspect of the host defense against an expanding neoplasm. CD8+ T cells have been identified as a prognostic factor in several cancers. Here, we investigate that the influence of CD8+ T cells on extrahepatic bile duct carcinoma (EBDC) patient survival.

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We conducted a joint study of different duration of drug administration for oral adjuvant chemotherapy using camphor (HCFU) with patients having advanced colorectal cancer who underwent curative resection. The patients were randomly divided into 2 groups, according to length of HCFU administration (6-month group and 2-year group), and followed up for 5 years postoperatively. In total, 239 patients were originally enrolled, out of which 155 were chosen as subjects for this study.

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A 65-yr-old man who underwent pancreaticoduodenectomy with portal vein resection for pancreatic cancer is alive 8 yr after surgery. Originally, computed tomography (CT) revealed an 8-cm tumor in the pancreatic head. The tumor had infiltrated the portal vein, but grew expansively, so there was neither biliary obstruction nor jaundice.

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Background: Although pancreatic endocrine tumor can produce a variety of hormones, few pancreatic tumors produce a high systemic calcitonin concentration. Furthermore, calcitonin-producing pancreatic tumors rarely produce elevations of VIP in addition.

Methods: We evaluated and treated a 50-yr-old woman with the WDHA syndrome.

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Objective: Recent studies have demonstrated the importance of tumor immunity for a cancer patient's prognosis. In some types of cancer, it has been shown through immunohistochemical analysis that the existence of CD8+ tumor-infiltrating lymphocytes (TILs) is a crucial factor in determining prognosis. In an experimental model, CD4+ lymphocytes together with CD8+ lymphocytes contributed significantly to tumor immunity.

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A 60-year-old postmenopausal woman presented with an ulcerating and bleeding tumor in her right breast. On physical examination, the tumor was found mainly in the D area of the right breast, and was associated with ulceration and thoracic rigidity. Chest X-ray showed a pleural effusion in her right chest and a computed tomography scan after thoracentesis showed multiple bilateral pleural nodules.

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In human genetics and molecular oncology, mutation research is necessary not only to identify mutations in nucleic acid sequences, but also to analyze the loss of function caused by mutant proteins. We reconstructed a protein-protein network system of human beta-catenin and TCF4, in Saccharomyces cerevisiae. beta-Catenin and TCF4 proteins form a complex and transactivate reporter genes.

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Background: The caudate lobe of the liver is divided into three subsegments based on the portal blood supply: the Spiegel lobe, the paracaval portion (S1r), and the caudate process. An isolated paracaval (S1r) subsegmentectomy is indicated for a small hepatocellular carcinoma localized within S1r. Because this challenging procedure has not been described, we report the details of successful surgical technique.

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Introduction: The mouse pancreas exhibits distinct atrophy of the exocrine tissue following pancreatic duct ligation.

Aim: To investigate changes of innervation in the whole pancreas after pancreatic duct ligation.

Methodology: The mouse pancreatic duct was ligated at 6 weeks of age.

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Background/aims: Radical distal pancreatectomy with en-bloc resection of the common hepatic, celiac, and left gastric arteries for pancreatic body cancer that involves these arteries does not routinely require arterial reconstruction because the collateral pathways via the pancreatoduodenal arcades from the superior mesenteric artery are recruited immediately. However, accidental injury to the pancreatoduodenal artery compromises collateral blood flow and may lead to fatal complications. This article describes the middle colic artery-gastroepiploic artery bypass as an emergent salvage procedure for restoring collateral flow.

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Background: Locally advanced cancer of the pancreatic body involving the celiac and/or common hepatic arteries is often considered unresectable. Radical distal pancreatectomy with en bloc resection of these arteries without reconstruction was recently introduced to treat these tumors. However, experience is still limited.

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Radical esophagectomy is a highly invasive operation for esophageal cancer, and improved techniques are being sought to reduce the invasiveness of this procedure. We devised a method in which an assistant inserts their left hand into the thoracic cavity, and the operator inserts their left hand into the abdominal cavity through a small incision in the upper quadrant during an endoscopic procedure. Between 1996 and 1999, we performed endoscopic esophagectomy on 18 patients.

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The purpose of this study is to clarify the roles of immune cell types, both individually and synergistically, in esophageal squamous cell carcinoma (ESCC). One hundred and twenty-two patients (105 males and 17 females; mean age, 62.3 years) with primary ESCC underwent surgical tumor resection at the Department of Surgical Oncology, School of Medicine, Hokkaido University and two affiliated hospitals between 1989 and 1999.

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Effective treatment has not yet been established for intestinal pseudo-obstruction, a rare complication of malignant pheochromocytoma. We report the case of a 41-year-old man who presented with malignant pheochromocytoma associated with pseudo-obstruction of the colon. His serum catecholamine level was markedly elevated, and his large intestine was distended with gas and lodged stool.

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