Yasutsugu Bandai

Publications (11)31.32 Total impact

• Article: Resection of a methicillin-resistant Staphylococcus aureus liver abscess in a patient with Crohn's disease under infliximab treatment: a case report.

  Junichi Togashi, Yasuhiko Sugawara, Nobuhisa Akamtsu, Taku Aoki, Masayoshi Ijichi, Mami Tanabe, Koji Kusaka, Masayuki Shibazaki, Tokuma Tadami, Minako Sakou, Masakazu Takazoe, Yasutsugu Bandai, Norihiro Kokudo
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  ABSTRACT: INTRODUCTION: A liver abscess in Crohn's disease is a rare but important entity that is associated with a poor prognosis and high mortality when treatment is delayed. We report a case of successful liver segmentectomy for a methicillin-resistant Staphylococcus aureus liver abscess in a patient with Crohn's disease under infliximab treatment. CASE PRESENTATION: A 31-year-old Japanese man, who had been treated with infliximab infusions for Crohn's disease, was referred to our hospital presenting with an abrupt onset of high fever and an elevated white blood cell count and serum C-reactive protein level. Computed tomography revealed a liver abscess occupying segment 8. The limited effect of percutaneous transhepatic abscess drainage and antibiotics led us to perform radical resection of the abscess. The patient recovered quickly after surgery and the postoperative course was uneventful. CONCLUSION: The present case suggests that surgical removal of an abscess should be considered for patients under immunosuppression or refractory to conventional treatment.
  Journal of Medical Case Reports 02/2013; 7(1):36.
• Article: Fluorescent Cholangiography during Laparoscopic Cholecystectomy: Indocyanine Green or New Fluorescent Agents? Letter to the Editor

  Takeaki Ishizawa, Yasutsugu Bandai, Kiyoshi Hasegawa, Norihiro Kokudo
  World Journal of Surgery 04/2012; 34(10):2505-2506. · 2.36 Impact Factor
• Article: Lifestyle modification and prevention of type 2 diabetes in overweight Japanese with impaired fasting glucose levels: a randomized controlled trial.

  Toshikazu Saito, Makoto Watanabe, Junko Nishida, Tomono Izumi, Masao Omura, Toshikazu Takagi, Ryuzo Fukunaga, Yasutsugu Bandai, Naoko Tajima, Yosikazu Nakamura, Masaharu Ito
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  ABSTRACT: Previous studies demonstrated that intensive lifestyle modification can prevent type 2 diabetes mellitus among those with impaired glucose tolerance, but similar beneficial results have not been proved among those with impaired fasting glucose levels. We investigated the efficacy of lifestyle modification on type 2 diabetes incidence among those with impaired fasting glucose levels. The present study was an unmasked, multicenter, randomized, controlled trial. A total of 641 overweight Japanese (aged 30-60 years) with impaired fasting glucose levels were recruited nationwide in Japan and randomly assigned to a frequent intervention group (n = 311) or a control group (n = 330). For 36 months after randomization, the frequent intervention group received individual instructions and follow-up support for lifestyle modification from the medical staff 9 times. The control group received similar individual instructions 4 times at 12-month intervals during the same period. The primary outcome was type 2 diabetes incidence in annual 75-g oral glucose tolerance tests, diagnosed according to World Health Organization criteria. There were no significant differences between the allocation groups in baseline characteristics and dropout rates. Estimated cumulative incidences of type 2 diabetes were 12.2% in the frequent intervention group and 16.6% in the control group. Overall, the adjusted hazard ratio in the frequent intervention group was 0.56 (95% confidence interval, 0.36-0.87). In the post hoc subgroup analyses, the hazard ratio reduced to 0.41 (95% confidence interval, 0.24-0.69) among participants with impaired glucose tolerance at baseline, and to 0.24 (0.12-0.48) among those with baseline hemoglobin A(1c) levels of 5.6% or more (the Japan Diabetes Society method). Such risk reduction was not observed among those with isolated impaired fasting glucose findings or baseline hemoglobin A(1c) levels of less than 5.6%. Lifestyle modifications can prevent type 2 diabetes among overweight Japanese with impaired fasting glucose levels. In addition, identifying individuals with more deteriorated glycemic status by using 75-g oral glucose tolerance test findings or, especially, measurement of hemoglobin A(1c) levels, could enhance the efficacy of lifestyle modifications. umin.ac.jp/ctr Identifier: UMIN000001959.
  Archives of internal medicine 08/2011; 171(15):1352-60. · 11.46 Impact Factor
• Article: Application of fluorescent cholangiography to single-incision laparoscopic cholecystectomy.

  Takeaki Ishizawa, Junichi Kaneko, Yosuke Inoue, Nobuyuki Takemura, Yasuji Seyama, Taku Aoki, Yoshifumi Beck, Yasuhiko Sugawara, Kiyoshi Hasegawa, Nobuhiro Harada, Masayoshi Ijichi, Koji Kusaka, Masayuki Shibasaki, Yasutsugu Bandai, Norihiro Kokudo
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  ABSTRACT: Although the use of single-incision laparoscopic cholecystectomy (SILC) is spreading rapidly, this technique has disadvantages. It does not allow for sufficient surgical views to be obtained or for intraoperative radiographic cholangiography to be performed. Fluorescent cholangiography using a preoperative intravenous injection of indocyanine green (ICG) may be useful for identifying the biliary tract during both SILC and conventional laparoscopic cholecystectomy. For seven patients undergoing SILC, 1 ml of ICG (2.5 mg) was administered by intravenous injection before the surgery. The prototype fluorescent imaging system consisted of a xenon light source and a 30° laparoscope (diameter, 10 mm) equipped with a charge-coupled device camera capable of filtering out light with wavelengths shorter than 810 nm. The laparoscope was introduced through an umbilical trocar. Fluorescent cholangiography then was performed by changing the color images to fluorescent images using a foot switch during dissection of the triangle of Calot. Fluorescent cholangiography identified the confluence between the cystic duct and the common hepatic duct in all seven patients before and throughout the dissection of the triangle of Calot. The interval from the injection of ICG to the first obtained fluorescent cholangiography before dissection of the triangle of Calot ranged from 35 to 75 min. Fluorescent cholangiography enabled real-time identification of the extrahepatic bile ducts during SILC without necessitating catheterization of the bile duct. Such properties of fluorescent cholangiography are expected to be helpful for ensuring the safety of SILC and expanding the indications for the procedure.
  Surgical Endoscopy 03/2011; 25(8):2631-6. · 4.01 Impact Factor
• Article: Peripheral T-cell lymphoma that developed during the follow-up of IgG4-related disease.

  Goki Kanda, Tomiko Ryu, Tsuyoshi Shirai, Masayoshi Ijichi, Tsunekazu Hishima, Shigehiro Kitamura, Yasutsugu Bandai
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  ABSTRACT: IgG4-related disease is a recently recognized fibroinflammatory disorder characterized by extensive IgG4-positive plasma cell and lymphocyte infiltration of various organs. The pancreatic manifestation of IgG4-related disease is called autoimmune pancreatitis (AIP), in which autoimmune mechanisms are likely involved. On the other hand, some autoimmune and chronic inflammatory disorders, such as Sjögren's syndrome and rheumatoid arthritis, are associated with increased risks of non-Hodgkin lymphoma (NHL). There have been a few reports of cases with IgG4-related disease that had subsequently developed NHL, however, all of them suffered from B-cell lymphoma. We describe the first case of NHL, compatible with a subtype of peripheral T-cell lymphoma, not otherwise specified (PTCL-NOS), which arose in IgG4-related sclerosing cholangitis. As patients with IgG4-related disease may be at an increased risk of developing NHL, such presentation during the follow-up of IgG4-related disease should be carefully scrutinized to exclude NHL.
  Internal Medicine 01/2011; 50(2):155-60. · 0.94 Impact Factor
• Article: Fluorescent cholangiography during laparoscopic cholecystectomy: indocyanine green or new fluorescent agents?

  Takeaki Ishizawa, Yasutsugu Bandai, Kiyoshi Hasegawa, Norihiro Kokudo
  World Journal of Surgery 10/2010; 34(10):2505-6. · 2.36 Impact Factor
• Article: Fluorescence navigation hepatectomy by visualization of localized cholestasis from bile duct tumor infiltration.

  Nobuhiro Harada, Takeaki Ishizawa, Arata Muraoka, Masayoshi Ijichi, Koji Kusaka, Masayuki Shibasaki, Kentaroh Yamamoto, Kiyoshi Hasegawa, Yasutsugu Bandai, Norihiro Kokudo
  Journal of the American College of Surgeons 06/2010; 210(6):e2-6. · 4.55 Impact Factor
• Article: Fluorescent cholangiography using indocyanine green for laparoscopic cholecystectomy: an initial experience.

  Takeaki Ishizawa, Yasutsugu Bandai, Norihiro Kokudo
  Archives of surgery (Chicago, Ill.: 1960) 05/2009; 144(4):381-2. · 4.32 Impact Factor
• Article: Pancreatic pseudocyst extending into the liver via the hepatoduodenal ligament: a case report.

  Masayuki Shibasaki, Yasutsugu Bandai, Tetsurou Ukai
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  ABSTRACT: A case of pancreatic pseudocyst extending into the liver via the hepatoduodenal ligament is reported. This is the first report clearly demonstrating that the hepatoduodenal ligament is another route of hepatic extension of pancreatic pseudocysts as well as the hepatogastric ligament, which is the most common. The importance of the topological anatomy of the peritoneum is emphasized in understanding the extrapancreatic extension of pancreatic pseudocysts.
  Hepato-gastroenterology 49(48):1719-21. · 0.66 Impact Factor
• Article: Pancreaticoduodenectomy for bile duct carcinoma of a patient undergoing hemodialysis.

  Taiichi Otani, Hirona Yamamoto, Yasutsugu Bandai, Hiroshi Yoshimoto, Toshio Shinoda
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  ABSTRACT: A 69-year-old Japanese man underwent pancreaticoduodenectomy for the resection of carcinoma at lower part of the common bile duct. Hemodialysis had already begun to treat chronic renal failure. He had been admitted for obstructive jaundice due to the carcinoma four months earlier. The serum total bilirubin was then 38.5 mg/dL, and the serum creatinine was 7 mg/dL. Hemodialysis was performed the day before the operation, and on the 1st, 3rd, 5th, 7th postoperative day. A rapidly degrading synthetic protease inhibitor was used as an anti-coagulant in the dialyzer to prevent systemic bleeding during the first postoperative week. Heparin was used from the second week. The maximum discharge from the drains was 2,300mL on the 3rd postoperative day. The drip intravenous infusion was changed from 1,900mL to 3,300mL during the first week to maintain the same body weight as the preoperative weight. Fresh frozen plasma and partial plasma fraction were used to maintain the colloidal pressure in the vessels so body weight reflects the fluid volume in the vessels. The postoperative course was uneventful. We present herein a successful case of pancreaticoduodenectomy for a patient undergoing hemodialysis to maintain the same body weight.
  Hepato-gastroenterology 55(81):24-6. · 0.66 Impact Factor
• Source

  Available from: Takeaki Ishizawa

  Article: Scientific Basis and Clinical Application of ICG Fluorescence Imaging: Hepatobiliary Cancer

  Takeaki Ishizawa, Nobuhiro Harada, Arata Muraoka, Taku Aoki, Yoshifumi Beck, Kiyoshi Hasegawa, Masayoshi Ijichi, Koji Kusaka, Masayuki Shibasaki, Yasutsugu Bandai, Norihiro Kokudo
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  ABSTRACT: Despite recent advances in imaging modalities, the intraoperative diagnosis of small liver cancers remains unsatisfactory. Although fluorescent imaging using indocyanine green (ICG) has just been applied to hepatobiliary surgeries, this technique has the potential to delineate small liver cancers during surgery, through allowing visualization of the disordered biliary excretion of ICG in the hepatocellular carcinoma (HCC) tissues and non-cancerous liver tissues surrounding metastasis of colorectal cancer (CRC). In this technique, ICG is administered intravenously for routine liver function testing before surgery, at the dose of 0.5 mg per kg body weight. The liver surfaces prior to resection, and the cut surfaces of the resected specimen, are examined by the fluorescent imaging system. In our previous series, ICG-fluorescent imaging prior to resection delineated more than 90% of liver cancers that were located within 10 mm of the liver surface. On examination of the cut surfaces of the resected specimens, this technique identified all of the microscopically confirmed HCCs and metastases of CRC. Furthermore, ICG-fluorescent imaging was useful to detect small HCCs that were not evident grossly unless visualized by this technique, as reported by Gotoh et al. These results suggest that ICG-fluorescent imaging enables the highly sensitive identification of small liver cancers in real time during liver resection and the subsequent macroscopic examination, enhancing the accuracy of surgery and operative cancer staging.