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Liver resection for hepatocellular carcinoma using a microwave tissue coagulator: Experience of 1118 cases 被引量:7
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作者 Kazunari Sasaki Masamichi Matsuda +1 位作者 Masaji Hashimoto goro watanabe 《World Journal of Gastroenterology》 SCIE CAS 2015年第36期10400-10408,共9页
A I M : To present our extensive experience of hepatectomy for hepatocellular carcinoma using a microwave tissue coagulator to demonstrate the effectiveness of this device. METHODS: A total of 1118 cases(1990-2013) we... A I M : To present our extensive experience of hepatectomy for hepatocellular carcinoma using a microwave tissue coagulator to demonstrate the effectiveness of this device. METHODS: A total of 1118 cases(1990-2013) were reviewed,with an emphasis on intraoperative blood loss,postoperative bile leakage and fluid/abscess formation,and adaptability to anatomical resection and hepatectomy with hilar dissection.RESULTS: The median intraoperative blood loss was 250 m L; postoperative bile leakage and fluid/abscess formation were seen in 3.0% and 3.3% of cases,respectively. Anatomical resection was performed in 275 cases,including 103 cases of hilar dissection that required application of microwave coagulation near the hepatic hilum. There was no clinically relevant biliary tract stricture or any vascular problems due to heat injury. Regarding the influence of cirrhosis on intraoperative blood loss,no significant difference was seen between cirrhotic and non-cirrhotic patients(P = 0.38),although cirrhotic patients tended to have smaller tumors and underwent less invasive operations. CONCLUSION: This study demonstrated outcomes of an extensive experience of hepatectomy using heat coagulative necrosis by microwave tissue coagulator. 展开更多
关键词 HEPATECTOMY HEPATOCELLULAR CARCINOMA MICROWAVE MIC
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Original single-incision laparoscopic cholecystectomy for acute inflammation of the gallbladder 被引量:7
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作者 Kazunari Sasaki goro watanabe +1 位作者 Masamichi Matsuda Masaji Hashimoto 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第9期944-951,共8页
AIM: To investigate the safety and feasibility of our original single-incision laparoscopic cholecystectomy (SII_C) for acute inflamed gallbladder (AIG).
关键词 Single-incision laparoscopic cholecystectomy Acute cholecystitis Acute cholangitis
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Retroperitoneal cavernous hemangioma resected by a pylorus preserving pancreaticoduodenectomy 被引量:3
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作者 Marie Hanaoka Masaji Hashimoto +4 位作者 Kazunari Sasaki Masamichi Matsuda Takeshi Fujii Kenichi Ohashi goro watanabe 《World Journal of Gastroenterology》 SCIE CAS 2013年第28期4624-4629,共6页
A retroperitoneal hemangioma is a rare disease. We report on the diagnosis and treatment of a retroperitoneal hemangioma which had uncommonly invaded into both the pancreas and duodenum, thus requiring a pylorus prese... A retroperitoneal hemangioma is a rare disease. We report on the diagnosis and treatment of a retroperitoneal hemangioma which had uncommonly invaded into both the pancreas and duodenum, thus requiring a pylorus preserving pancreaticoduodenectomy (PpPD). A 36-year-old man presented to our hospital with abdominal pain. An enhanced computed tomography scan without contrast enhancement revealed a 12 cm × 9 cm mass between the pancreas head and right kidney. Given the high rate of malignancy associated with retroperitoneal tumors, surgical resection was performed. Intraoperatively, the tumor was inseparable from both the duodenum and pancreas and PpPD was performed due to the invasive behavior. Although malignancy was suspected, pathological diagnosis identified the tumor as a retroperitoneal cavernous hemangioma for which surgical resection was the proper diagnostic and therapeutic procedure. Reteoperitoneal cavernous hemangioma is unique in that it is typically separated from the surrounding organs. However, clinicians need to be aware of the possibility of a case, such as this, which has invaded into the surrounding organs despite its benign etiology. From this case, we recommend that combined resection of inseparable organs should be performed if the mass has invaded into other tissues due to the hazardous nature of local recurrence. In summary, this report is the first to describe a case of retroperitoneal hemangioma that had uniquely invaded into surrounding organs and was treated with PpPD. 展开更多
关键词 RETROPERITONEAL tumor RETROPERITONEAL CAVERNOUS HEMANGIOMA CAVERNOUS HEMANGIOMA PANCREATICODUODENECTOMY PYLORUS PRESERVING PANCREATICODUODENECTOMY
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Right hepatectomy for giant cavernous hemangioma with diffuse hemangiomatosis around Glisson's capsule 被引量:2
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作者 Yu Ohkura Masaji Hashimoto +3 位作者 Seigi Lee Kazunari Sasaki Masamichi Matsuda goro watanabe 《World Journal of Gastroenterology》 SCIE CAS 2014年第25期8312-8316,共5页
Diffuse liver hemangiomatosis with giant cavernous hemangioma in adult is extremely rare. A 35 year-old woman presented to hospital with main complaint of epigastric pain and abdominal fullness. An enhanced computed t... Diffuse liver hemangiomatosis with giant cavernous hemangioma in adult is extremely rare. A 35 year-old woman presented to hospital with main complaint of epigastric pain and abdominal fullness. An enhanced computed tomography scan revealed a massive liver tumor in right lobe about 150 mm in size. There was contrast enhancement at the periphery of the mass consistent with a cavernous hemangioma. She underwent right hepatectomy. Histologically, it was diagnosed as a cavernous hemangioma. And also, hemangiomatous lesions were scattered around the Glisson&#x02019;s capsule on the back ground liver. These hemangiomatous lesions were not recognized preoperatively. Even if we couldn&#x02019;t diagnose hemangiomatosis around the main giant hemangioma preoperatively, we need to take enough surgical margins because the giant hemangioma has the potential to have small hemangiomatous lesions around the tumor. We reported right hepatectomy for giant cavernous hemangioma with diffuse hepatic hemangiomatosis without an extrahepatic lesion in an adult. 展开更多
关键词 Giant cavernous hemangioma HEMANGIOMATOSIS Right hepatectomy Around Glisson’ s capsule SURGERY
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Surgical approach for hepatitis C virus-related hepatocellular carcinoma 被引量:1
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作者 Junichi Shindoh Masaji Hashimoto goro watanabe 《World Journal of Hepatology》 CAS 2015年第1期70-77,共8页
Hepatitis C is a strong prognostic factor for patients with hepatocellular carcinoma(HCC). Although liver resection and liver transplantation offer the chance of a cure for HCC,adequate management of co-existing infec... Hepatitis C is a strong prognostic factor for patients with hepatocellular carcinoma(HCC). Although liver resection and liver transplantation offer the chance of a cure for HCC,adequate management of co-existing infection with hepatitis C virus(HCV) is important to enable better long-term outcomes after surgery for HCV-related HCC. For patients undergoing liver resection,perioperative anti-viral treatment is recommended,since a decreased HCV viral load itself is reportedly associated with a lower tumor recurrence rate and a longer overall survival. For patients undergoing transplanatations for HCC complicated by end-stage liver disease,the post-transplant management of HCV infection is also necessary to prevent progressive graft injury caused by active hepatitis under the immunosuppressive condition that is needed after liver transplantation. Although only a few lines of solid evidence are available for postoperative antiviral treatment because of the limited indication and frequent adverse events caused by conventional high-dose combination interferon therapy,new direct acting anti-viral agents would enable interferon-free anti-viral treatment with a higher virologic response and minimal side effects. 展开更多
关键词 HEPATOCELLULAR CARCINOMA HEPATITIS C Liverresection Liver TRANSPLANTATION ADJUVANT therapy
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超高强钢板DP980焊点组织硬度的控制研究
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作者 渡辺吾朗 黄露 +1 位作者 罗时清 袁成逸 《焊接技术》 2020年第10期4-7,共4页
为了分析短时间脉冲电流回火处理对超高强钢(DP980)电阻点焊性能的影响,研究了不同工艺处理后的接头熔核微观组织和硬度。结果表明:未进行回火处理时,热影响区(HAZ)内温度接近Ac1临界点的边界线附近马氏体会发生分解析出碳化物,形成回... 为了分析短时间脉冲电流回火处理对超高强钢(DP980)电阻点焊性能的影响,研究了不同工艺处理后的接头熔核微观组织和硬度。结果表明:未进行回火处理时,热影响区(HAZ)内温度接近Ac1临界点的边界线附近马氏体会发生分解析出碳化物,形成回火马氏体,从而产生软化区(Ⅰ);通过极短时间回火处理后,在接头熔核区会形成与软化区(Ⅰ)组织特征相同的新软化区(Ⅱ)。因此,通过优化回火工艺参数,可以控制熔核区周围的软化位置。由于HAZ的应力集中会影响熔核区的断裂强度,通过以后进一步研究,可以降低该区域的应力集中。 展开更多
关键词 超高强钢 电阻点焊 硬度 Ac1临界点 软化区 回火马氏体
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