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Lobulated inflammatory myoglandular polyp in the ascending colon observed by magnifying endoscopy and treated with endoscopic polypectomy

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World Journal of Gastroenterology 2008年第30期14卷 4838-4840页

作者： Hiromitsu Kanzaki Shoji Hirasaki masato okuda Kenichiro Kudo Seiyuu Suzuki Department of Internal Medicine Sumitomo Besshi Hospital

The patient was a 33-year-old man with hematochezia. Colonoscopy revealed a lobulated peduncular polyp with bleeding, about 40 mm in diameter, in the ascending colon. The polyp had both red and white components and a mosaic pattern. Magnifying observation revealed a red rugged surface component, and smooth white nodules with enlarged round or oval crypt openings. Endoscopic polypectomy was performed. Histological examination of the specimen revealed inflammatory granulation tissue in the lamina propria, proliferation of smooth muscle, and hyperplastic glands with cystic change. This polyp was diagnosed as inflammatory myoglandular polyp (IMGP). Lobulated-type IMGP in the ascending colon is rare.

关键词：息肉结肠镜检查放大内窥镜检查法息肉切除术便血

Inflammatory myoglandular polyp causing hematochezia

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World Journal of Gastroenterology 2008年第34期14卷 5353-5355页

作者： Shoji Hirasaki masato okuda Kenichiro Kudo Seiyuu Suzuki Atsuko Shirakawa Department of Internal Medicine Sumitomo Besshi Hospital Department of Pathology Sumitomo Besshi Hospital

A case of inflammatory myoglandular polyp (IMGP) causing hematochezia is reported. The patient was a 33-year-old man who visited our hospital for further evaluation of hematochezia. Colonoscopy revealed a red, hard, spherical peduncular polyp with erosion and mucous exudation, about 20 mm in diameter, in the descending colon. Excluding the polyp, there was no lesion in the colorectum. Endoscopic polypectomy was performed. Histological examination of the specimen revealed inflammatory granulation tissue in the lamina propria, proliferation of smooth muscle, and hyperplastic glands with variable cystic changes. This polyp was diagnosed as an IMGP. The symptom of hematochezia was resolved after endoscopic resection. Our case shows that treatment is necessary for IMGP if intestinal bleeding occurs and endoscopists should be aware of the endoscopic characteristics of IMGP.

关键词：息肉结肠镜检查内窥镜息肉切除术便血胃肠道出血

Asymptomatic colonic metastases from primary squamous cell carcinoma of the lung with a positive fecal occult blood test

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World Journal of Gastroenterology 2008年第35期14卷 5481-5483页

作者： Shoji Hirasaki Seiyuu Suzuki Shigeki Umemura Haruhito Kamei masato okuda Kenichiro Kudo Department of Internal Medicine Sumitomo Besshi HospitalNiihama 7928543Japan

We describe a 74-year-old man with a colonic metastatic squamous cell carcinoma (SCC) from the lung. His chest X-ray revealed an abnormal shadow in the right upper lobe. Computed tomography (CT) of the chest demonstrated a large lung tumor in the right upper lobe obstructing the right upper bronchus. Bronchoscopy revealed an easy-bleeding tumor in the right upper bronchus that was diagnosed as poorly differentiated squamous cell lung carcinoma. He underwent colonoscopy because he had a positive fecal occult blood test. Colonoscopy revealed a large protruding lesion with central ulceration in the descending colon. Histological examination of the biopsy specimen obtained from the colonic lesion revealed SCC. The lesion was diagnosed as metastatic colonic SCC. He had no abdominal symptoms. He underwent chemotherapy with an infusion of cisplatin 130 mg i.v. day 1, and docetaxel hydrate 100 mg i.v. day 1, repeated every 4 wk, followed by 4 courses of chemotherapy. The primary lesion shrank by less than 10% and was judged to be "Partial Response" (PR) after 3 courses of treatment. The patient still lived 23 wk after the diagnosis of metastatic colonic SCC. Colonic metastasis of primary SCC of the lung is rare.

关键词：肺癌鳞状细胞癌粪便潜隐血测试结肠转移

A ruptured large extraluminal ileal gastrointestinal stromal tumor causing hemoperitoneum

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World Journal of Gastroenterology 2008年第18期14卷 2928-2931页

作者： Shoji Hirasaki Kohei Fujita Minoru Matsubara Hiromitsu Kanzaki Hiromichi Yamane masato okuda Seiyuu Suzuki Atsuko Shirakawa Hideyuki Saeki Department of Internal Medicine Sumitomo Besshi Hospital Niihama 7928543 Japan Department of Pathology Sumitomo Besshi Hospital Niihama 7928543 Japan Department of Surgery Sumitomo Besshi Hospital Niihama 7928543 Japan

We describe an 87-year-old woman with a large ileal gastrointestinal stromal tumor (GIST) causing hemoperitoneum. A CT scan demonstrated a large heterogeneous mass measuring about 13 cm × 11 cm in the pelvis and hemoperitoneum, with a non-uniform enhancement pattern. The mass was diagnosed as a GIST originating from the gastrointestinal tract. She underwent an urgent laparotomy and an ileal GIST with a rupture was found 130 cm from the anal to the Treitz’s ligament. Hemoperitoneum caused by ileal GIST rupture is a rare condition. Bleeding in the large tumor leading to rupture of the capsule might cause hemoperitoneum in the present case.

关键词：肠道新生物小肠疾病剖腹术治疗方法

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未来气候条件下蒙古草原植被的预测分布

Journal of Plant Ecology 2024年第3期17卷 16-27页

作者： Kohei Suzuki Ikutaro Tsuyama Radnaakhand Tungalag Amartuvshin Narantsetseg Tsagaanbandi Tsendeekhuu masato Shinoda Norikazu Yamanaka Takashi Kamijo Department of Regional Regeneration Science Faculty of Regional Environment ScienceTokyo University of AgricultureTokyo 156-8502Japan Hokkaido Research Center Forestry and Forest Products Research InstituteHokkaido 062-8516Japan Department ofBiology School of Arts and SciencesNational University of MongoliaUlaanbaatar 210646Mongolia Botanic Garden and ResearchInstitute Mongolian Academy of ScienceUlaanbaatar 51Mongolia Department of Earth and Environmental Sciences GraduateSchool of Environmental StudiesNagoya UniversityNagoya 464-8601Japan Arid Land Research Center Tottori UniversityTottori680-0001Japan Faculty of Life and Environmental Sciences University of TsukubaIbaraki 305-8572Japan

蒙古牧民家庭通过适应当地植被分布的特点来维持牲畜的健康状况。因此,预测未来植被变化对于稳定的牲畜放牧和可持续的草原利用至关重要。本研究基于前期研究获得的植被数据预测了2081年至2100年间草原植被,尤其是沙漠草原、草原和草甸... 详细信息

蒙古牧民家庭通过适应当地植被分布的特点来维持牲畜的健康状况。因此,预测未来植被变化对于稳定的牲畜放牧和可持续的草原利用至关重要。本研究基于前期研究获得的植被数据预测了2081年至2100年间草原植被,尤其是沙漠草原、草原和草甸草原的分布范围。我们首先基于在蒙古(43–50°N,87–119°E)收集的草原植被数据(2012至2016年,278个样地)划分了不同的群落类型。其次,采用最大熵(MaxEnt)模型进行物种分布建模,其中以荒漠草原、草原和草甸草原的分布数据作为目标变量,使用WorldClim的生物气候数据作为解释变量。最后,采用WorldClim提供的CMIP6下缩放的未来气候预测数据进行未来预测。结果发现,荒漠草原、草原和草甸草原模型的曲线下面积值分别为0.850、0.847和0.873。根据所有情景和所有群落的气候变化,适宜栖息地预计将缩小。潜在适宜区域减少的程度在草甸草原群落中最为显著。上述结果表明,未来气候变化情景下草甸草原群落将转变为草原群落。

关键词：气候变化群落最大熵物种分布建模草原 WorldClim

Perihilar cholangiocarcinoma:a surgeon's perspective

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iLIVER 2022年第1期1卷 12-24页

作者： masato Nagino Department of Gastroenterological Surgery Aichi Cancer Center1-1 KanokodenChikusa-kuNagoya464-8681Japan

Perihilar cholangiocarcinoma(PHC)is defined anatomically as tumors located in the extrahepatic biliary tree proximal to the origin of the cystic ***,as the boundary between the extrahepatic and intrahepatic bile ducts is not well defined,PHC potentially includes two types of tumors:one is the extrahepatic type,which arises from the large hilar bile duct,and the other is the intrahepatic type,which has an intrahepatic component with invasion of the hepatic *** new American Joint Commission on Cancer tumor-node-metastasis staging system for PHC was well revised;an important revision is that the Bismuth type IV was removed from T4 stage *** patients with PHC present with obstructive jaundice,and preoperative biliary drainage is ***,percutaneous transhepatic biliary drainage was used in many centers;however,it has been accepted that endoscopic nasobiliary drainage is the most suitable method for ***,inside-stents have also been adopted for biliary drainage,with favorable *** vein embolization is widely performed as presurgical treatment for patients undergoing extended hepatectomy to minimize postoperative liver *** resection of PHC is technically demanding and continues to be the most difficult challenge for hepatobiliary *** of advances in diagnostic and surgical techniques,surgical outcomes and survival rates after resection have steadily ***,survival rates,especially for patients with lymph node metastasis,are unsatisfactory,and establishing a protocol for effective adjuvant chemotherapy is an urgent *** synergy of endoscopists,radiologists,oncologists,and surgeons is required to conquer this intractable disease.

关键词： Perihilar cholangiocarcinoma Biliary drainage Portal vein embolization Extended surgery

Vertical impedance functions of pile groups under low-to-high loading amplitudes:numerical simulations and experimental validation

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Earthquake Engineering and Engineering Vibration 2023年第3期22卷 647-666页

作者： Usama Zafar Chandra Shekhar Goit masato Saitoh Riku Fukuda School of Science and Engineering Saitama University255 Shimo-OkuboSaitamaJapan

Piles in a group experience additional displacements in soil due to pile-to-pile interactions apart from those resulting from the external *** effect of these interactions determined assuming soil as an elastic and/or viscoelastic material on pile head impedance functions of the pile group is studied by relating the group stiffness to the static stiffness of a single ***,the prevailing elastic solutions may misestimate the resulting pile group response due to the lack of consideration for either soil(material)and/or soil-pile interface *** is well established that soil behaves nonlinearly under moderate-to-high loading amplitudes,and besides,the soil-pile interface nonlinearity can exist even at small loading *** study addresses the effects of these nonlinearities on the vertical impedance functions of a 3×3-pile group using numerical methods by direct analyses and superposition using pile-to-pile interaction *** numerical results are validated using scaled model tests under 1 g *** results highlight the overestimation of pile-to-pile interactions in the pile group when assuming elastic soil *** cases either by direct analyses or superposition approach involving soil and soil-pile interface nonlinearities agree well with the experimental pile group responses under close-to-elastic and nonlinear conditions.

关键词： impedance functions numerical simulations model-scale experiment superposition approach soil-pile interface nonlinearity

Epidemiology and Management of Drug-induced Liver Injury: Importance of the Updated RUCAM

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Journal of Clinical and Translational Hepatology 2023年第5期11卷 1239-1245页

作者： Takashi Kobayashi Michihiro Iwaki Asako Nogami masato Yoneda Department of Gastroenterology and Hepatology Yokohama City University Graduate School of MedicineYokohamaJapan

Drug-induced liver injury(DILI)is a major cause of acute liver injury,liver failure,and liver transplantation *** recent years,immune checkpoint inhibitors have become widely *** has led to an increase in DILI,for which pathophysiology and management methods differ significantly from the *** the number of cases of acute liver injury and liver transplantation due to DILI is expected to increase,information about a DILI is becoming more *** is classified into two types according to its etiology:intrinsic DILI,in which the drug or its metabolites cause liver damage that is dose-dependent and predictable;and idiosyncratic DILI,in which liver damage is also dose-independent but *** addition,depending on the course of the disease,chronic DILI or drug-induced autoimmune hepatitis may be *** number of DILI cases caused by antimicrobial agents is decreasing,whereas that caused by drugs for malignant tumors and health foods is *** Roussel Uclaf Causality Assessment Method is widely used to assess causality in *** injury is a type of immune-related adverse *** pattern of hepatic injury in immune-related adverse events is mostly hepatocellular,but mixed type and bile stasis have also been *** cholangitis caused by immune checkpoint inhibitors has also been reported as a unique type of *** mainly comprises withdrawal of immune checkpoint inhibitors and steroid administration;however,mycophenolate mofetil may be considered if the disease is refractory to steroids.

关键词： Drug-induced liver injury Immune-related adverse events Immune checkpoint inhibitor Updated RUCAM

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中国与国际玉米价格的波动关系分析

中国商论 2024年第1期 1-6页

作者：刘凯穆月英山崎雅人小池淳司商务部国际贸易经济合作研究院北京100710 中国农业大学经济管理学院北京100083 名古屋大学减灾合作研究中心日本名古屋4648601 神户大学工学部日本神户6578501

本文在政策分析的基础上,建立VAR-BEKK-GARCH模型进行实证分析。首先,国际玉米价格的波动幅度比中国价格波动幅度大,临储政策取消后,中国价格波动幅度变大。其次,临储期间,中国价格的预期波动可以影响国际价格的波动,而国际价格的随机... 详细信息

本文在政策分析的基础上,建立VAR-BEKK-GARCH模型进行实证分析。首先,国际玉米价格的波动幅度比中国价格波动幅度大,临储政策取消后,中国价格波动幅度变大。其次,临储期间,中国价格的预期波动可以影响国际价格的波动,而国际价格的随机波动可以影响中国价格的波动。在生产者补贴期间,中国价格的预期波动和随机波动均可影响国际价格的波动。再次,中国价格的影响力在中国市场和进口市场占据主导地位,与国产玉米供给本国市场的数量地位相符。最后,中国玉米进口的不断增加将降低对本国市场价格的主导能力,需重视通过“期货+保险”规避价格风险,并分散玉米进口源,以提高市场主导力。

关键词：玉米价格波动价格风险波动溢出 VAR-BEKK-GARCH模型