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Aorto-right atrial fistula: Late complication of tricuspid valve infective endocarditis

World Journal of Cardiology 2014年第10期6卷 1122-1126页

作者： Pedro A Villablanca Shashvat Sukhal Oscar Maitas Afiachuukwu Onuegbu Juan M Muoz-Pea Ajay Joseph carlos requena Divyanshu Mohananey Department of InternalMedicine John H. Stroger Jr. Hospital of Cook County ChicagoIL 60612 United States

Abnormal connections between the ascending aortaand the cardiac chambers are rare, especially in thecontext of right-sided infective endocarditis(IE). Trans-thoracic echocardiography(TTE) with color-flow Dop-pler, transesophageal echocardiography(TEE), or bothmay be required for diagnosis. We present the case ofa woman admitted with right-sided heart failure(HF)symptoms. She had a previous history of tricuspid valveIE 30 years ago. TTE and TEE revealed an aorto-rightatrium fistula located just under the non-coronary cuspinto the right atrium at the level of the previously af-fected tricuspid valve. The Patient refused surgery andwas discharged home on HF medications. She has beenstable for the last 3 years. The peculiarity of this caseis the late symptomatic presentation of the aorto-atrialfistula and the unusual association to tricuspid valve IE.

关键词： Aorto-cardiac fistula Infective endocarditis Tricuspid valve

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Microstructure and mechanical behavior of similar butt-joints of ZK60 and ZK60-1.5RE magnesium alloys produced by linear friction stir welding

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Journal of Magnesium and Alloys 2021年第5期9卷 1802-1817页

作者： Erenilton Pereira da Silva Ricardo Henrique Buzolin Ulises Alfaro Guillermo requena Haroldo Calvalcanti Pinto Institute of Engineering Science and Technology(IECT)Federal University of Vales do Jequitinhonha e Mucuri(UFVJM)JanaúbaMGBrazil Department of Materials Engineering São Carlos School of Engineering(EESC)University of São Paulo(USP)São Carlos-SP CEP 13563-120Brazil Christian Doppler Laboratory for Design of High-Performance Alloys by Thermomechanical Processing Kopernikusgasse 24Graz 8010Austria Institute of Materials Science Joining and Forming at Graz University of Technology opernikusgasse 24/IGraz 8010Austria German Aerospace Center(DLR)Institute of Materials Research Linder HöheCologne 51147Germany RWTH Aachen University Metallic Structures and Materials Systems for Aerospace EngineeringD-52062 AachenGermany.

The microstructure and mechanical properties of butt-joints produced by linear friction stir welding of similar plates of as-cast ZK60 and modified ZK60 with 1.5 wt.%RE(ZK60-1.5 RE)are *** thermomechanical affected zone is investigated in both advancing and retrieving sides,and the microstructure is compared to the base metal and the stirred *** backscattered diffraction measurements provide the average microstructural features of the transformed *** mechanical properties are assessed using hardness,tensile testing,and surface residual stress measured using X-ray *** torque and heat input are obtained for the ZK60-1.5 RE compared to the *** thermomechanical affected zone is notably larger for the ZK60 compared to the ZK60-1.5 RE.A gradient microstructure is formed in thermomechanical affected zones where deformed grains are progressively more recrystallised towards the stirred *** is no visible interface between the thermomechanical affected zone and the stirred zone.A fine and partially recrystallised microstructure is formed in the stirred *** retrieving side of the ZK60-1.5 RE has a slightly more refined microstructure compared to the other investigated *** measured with increment in the maximum intensity of the(0001)increases towards to stirred *** formed microstructure is correlated with the role of twinning,recovery,static,and dynamic recrystallisation that can occur during friction stir *** and grains with large misorientation spread are more pronounced in the thermomechanical affected zone and regions towards the base *** low angle grain boundaries are observed towards the stirred *** refined recrystallised grains decorating the grain in the thermomechanical affected zone,a mosaic-like of low and high angle grain boundaries are observed in the stirred *** joints have comparable surface residual *** friction stir welding improved th

关键词： ZK60 Mischmetal FSW Recrystallization Microstructure Thermomechanical

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Diagnostic-therapeutic management of bile duct cancer

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World Journal of Clinical Cases 2019年第14期7卷 1732-1752页

作者： José María Huguet Miriam Lobo José Mir Labrador carlos Boix Cecilia Albert Luis Ferrer-Barceló Ana B Durá Patricia Suárez Isabel Iranzo Mireia Gil-Raga Celia Baez de Burgos Javier Sempere Digestive Disease Department General University Hospital of ValenciaValencia 46014Spain Medical Oncology Department General University Hospital of ValenciaValencia 46014Spain Unidad Hepática Avanzada Servicio de Cirugía General y DigestivaGeneral University Hospital of ValenciaValencia 46014Spain Medical Oncology Department Hospital de RequenaRequena 46340Spain

Biliary tract cancer, or cholangiocarcinoma, comprises a heterogeneous group of malignant tumors that can emerge at any part of the biliary tree. This group is the second most common type of primary liver cancer. Diagnosis is usually based on symptoms, which may be heterogeneous, and nonspecific biomarkers in serum and biopsy specimens, as well as on imaging techniques. Endoscopy-based diagnosis is essential, since it enables biopsy specimens to be taken. In addition, it can help with locoregional staging of distal tumors. Endoscopic retrograde cholangiopancreatography is a key technique for the evaluation and treatment of malignant biliary tumors. Correct staging of cholangiocarcinoma is essential in order to be able to determine the degree of resectability and assess the results of treatment. The tumor is staged based on the TNM classification of the American Joint Committee on Cancer. The approach will depend on the classification of the tumor. Thus, some patients with early-stage disease could benefit from surgery;complete surgical resection is the cornerstone of cure. However, only a minority of patients are diagnosed in the early stages and are suitable candidates for resection. In the subset of patients diagnosed with locally advanced or metastatic disease, chemotherapy has been used to improve outcome and to delay tumor progression. The approach to biliary tract tumors should be multidisciplinary, involving experienced endoscopists, oncologists, radiologists, and surgeons.

关键词： Bile duct cancer Cholangiocarcinoma Management Diagnosis Incidence Multidisciplinary treatment

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