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Malignant solitary fibrous tumor involving the liver

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World Journal of Gastroenterology 2013年第21期19卷 3354-3357页

作者： Manuel Jakob matthias schneider Ingo Hoeller Urban Laffer Reto Kaderli Department of Surgery Spitalzentrum Biel AGCH-2501 BielSwitzerland Department of Radiology Spitalzentrum Biel AGCH-2501 BielSwitzerland Department of Visceral Surgery and Medicine University Hospital BernCH-3010 BernSwitzerland

Solitary fibrous tumors are predominantly benign and are most commonly found in the thoracic cavity and pleura; while reports exist in the literature of malignant solitary fibrous tumors and those located in extrathoracic organs, these cases are considered extremely rare. Herein, a case is reported of a malignant solitary fibrous tumor involving the liver that was diagnosed and treated in a 62-year-old woman. The patient presented with complaints of upper abdominal pain and unintentional weight loss. Computed tomography scan of the abdomen revealed a remarkably large mass, measuring 15 cm × 10 cm × 20 cm, which appeared to be unrelated to any particular organ. The intraoperative finding of a wide communication with the left liver suggested hepatic origin, and served as an indicator for tumor resection via left hemihepatectomy. The diagnosis of solitary fibrous tumor and its malignant nature was confirmed by histological and immunohistochemical examination of the resected tissues. Hepatic solitary fibrous tumor is very rare, and surgery remains the mainstay of treatment. Due to limited reports of such tumors in the literature, little can be said about the benefit of adjuvant therapy and prognosis for the rare cases with malignant histological findings.

关键词： Malignant Solitary fibrous tumor Liver Extrathoracic Mesenchymal neoplasm Surgical resection

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喷油装置噪声的形成

内燃机燃油喷射和控制 1997年第4期 16-23,43页

作者： matthias schneider 张明德国

本文介绍了一种载重车用柴油机上由喷油装置产生的噪声的原因及其传播机理。通过台架试验和模拟计算,分析了该噪声的形成机理,并定量说明了发动机噪声辐射的各部分构成。

关键词：车用柴油机喷油装置噪声单体泵柴油机

Alveolar stability under different combinations of positive end-expiratory pressure and tidal volume： alveolar microscopy in isolated injured rat lungs

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Chinese Medical Journal 2010年第4期123卷 406-411页

作者： LIU Hui Claudius A. Stahl Knut Moeller matthias schneider Steven Ganzert ZHAO Zhan-qi TONG Xiao-wen Josef Guttmann Department of Breast Surgery Tongji Hospital Tongji University School of Medicine Shanghai 200065 China Department of Anesthesiology and Critical Care Medicine University Medical Center Freiburg 79106 Germany Biomedical Engineering Furtwangen University VS-Schwenningen 78056 Germany Woman Health Care Center of Tongji University Shanghai 200065 China

Background High positive end-expiratory pressure （PEEP） and low tidal volume （VT） ventilation is thought to be a protective ventilation strategy. It is hypothesized that the stabilization of collapsible alveoli during expiration contributes to lung protection. However, this hypothesis came from analysis of indirect indices like the analysis of the pressure-volume curve of the lung. The purpose of this study was to investigate isolated healthy and injured rat lungs by means of alveolar microscopy, in which combination of PEEP and VT is beneficial with respect to alveolar stability （I-E%）. Methods Alveolar stability was investigated in isolated, non-perfused mechanically ventilated rat lungs. Injured lungs were compared with normal lungs. For both groups three PEEP settings （5, 10, 20 cmH20） were combined with three VT settings （6, 10, 15 ml/kg） resulting in nine PEEP-VT combinations per group. Analysis was performed by alveolar microscopy. Results In normal lungs alveolar stability persisted in all PEEP-VT combinations （I-E% （3.2±11.0）%）. There was no significant difference using different settings （P 〉0.01）. In contrast, alveoli in injured lungs were extremely instable at PEEP levels of 5 cmH20 （mean I-E% 100%） and 10 cmH2O （mean I-E% （30.7±16.8）%）; only at a PEEP of 20 cmH20 were alveoli stabilized （mean I-E% of （0.2±9.3）%）. Conclusions In isolated healthy lungs alveolar stability is almost unaffected by different settings of PEEP and VT. In isolated injured lungs only a high PEEP level of 20 cmH2O resulted in stabilized alveoli whereas lower PEEP levels are associated with alveolar instability.

关键词： alveolar microscopy alveolar mechanics tidal volume positive end-expiratory pressure

如何实现绿色化工？——如何贯彻落实绿色化工的法律法规

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流程工业 2008年第22期 16-17页

作者： Bernd schneider matthias Kuschel 法兰克福Pricewaterhouse Coopers Corporale财务咨询有限责任公司

不仅在化工生产工艺技术方面，而且在化工产品方面，“绿色”越来越多地成为化工企业内部的差异因素。本文介绍的就是绿色化工的概念，讲解“绿色”和“可持续发展”之间的关系，介绍如何正确的贯彻落实绿色化工的法律法规。

关键词：绿色化工法律法规生产工艺技术可持续发展化工产品企业内部

Proton pump inhibitors and all-cause mortality risk among cancer patients

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World Journal of Clinical Oncology 2025年第1期16卷 34-42页

作者： Arunkumar Krishnan Carolin Victoria schneider Declan Walsh Department of Supportive Oncology Atrium Health Levine CancerCharlotteNC 28204United States Department of Medicine Section of Hematology and OncologyWake Forest University School of MedicineWinston-SalemNC 27101United States Department of Medicine Ⅲ GastroenterologyMetabolic Diseasesand Intensive CareUniversity Hospital RWTH AachenAachen 52074Germany

BACKGROUND Proton pump inhibitors(PPIs)are widely used,including among cancer patients,to manage gastroesophageal reflux and other gastric acid-related *** evidence suggests associations between long-term PPI use and higher risks for various adverse health outcomes,including greater *** To investigate the association between PPI use and all-cause mortality among cancer patients by a comprehensive analysis after adjustment for various confounders and a robust methodological approach to minimize *** This retrospective cohort study used data from the TriNetX research network,with electronic health records from multiple healthcare *** study employed a new-user,active comparator design,which compared newly treated PPI users with non-users and newly treated histamine2 receptor antagonists(H2RA)users among adult cancer *** prescribed PPIs(esomeprazole,lansoprazole,omeprazole,pantoprazole,or rabeprazole)users were compared to non-users or newly prescribed H2RAs(cimetidine,famotidine,nizatidine,or ranitidine)*** primary outcome was all-cause *** patient in the main group was matched to a patient in the control group using 1:1 propensity score matching to reduce confounding *** Cox regression models were used to estimate hazard ratios(HRs)and 95% confidence interval(CI).RESULTS During the follow-up period(median 5.4±1.8 years for PPI users and 6.5±1.0 years for non-users),PPI users demonstrated a higher all-cause mortality rate than non-users after 1 year,2 years,and at the end of follow up(HRs:2.34-2.72).Compared with H2RA users,PPI users demonstrated a higher rate of all-cause mortality HR:1.51(95%CI:1.41-1.69).Similar results were observed across sensitivity analyses by excluding deaths from the first 9 months and 1-year post-exposure,confirming the robustness of these *** a sensitivity analysis,we analyzed all-cause mortality outcomes between former PPI users and individual

关键词： All-cause mortality Cancer Histamine-2 receptor antagonists Mortality Malignancy Proton pump inhibitors Carcinoma Outcome

Self-expanding metal stents for the palliation of malignant gastric outlet obstruction in patients with peritoneal carcinomatosis

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World Journal of Gastroenterology 2016年第43期22卷 9554-9561页

作者： Christoph Rademacher matthias Bechtler Steffen schneider Bettina Hartmann Johannes Striegel Ralf Jakobs Medizinische Klinik C Klinikum der Stadt Ludwigshafen Department of Statistics/Stiftung IHF Institut für Herzinfarktforschung

AIM To evaluate the efficacy of self-expanding metal stents(SEMS) for the palliation of malignant gastric outlet obstruction in patients with and without peritoneal carcinomatosis(PC).METHODS We performed a retrospective analysis of 62 patients who underwent SEMS placement for treatment of malignant gastroduodenal obstruction at our hospital over a six-year period. Stents were deployed through the scope under combined fluoroscopic and endoscopic guidance. Technical success was defined as successful stent placement and expansion. Clinical success was defined as an improvement in the obstructive symptoms and discharge from hospital without additional parenteral nutrition. According to carcinomatosis status, patients were assigned into groups with or without evidence of peritoneal *** In most cases, obstruction was caused by pancreatic(47%) or gastric cancer(23%). Technical success was achieved in 96.8%(60/62), clinical success in 79%(49/62) of all patients. Signs of carcinomatosis were identified in 27 patients(43.5%). The diagnosis was confirmed by pathology or previous operation in 7 patients(11.2%) and suspected by CT, MRI or ultrasound in 20 patients(32.2%). Presence of carcinomatosis was associated with a significantly lower clinical success rate compared to patients with no evidence of peritoneal disease(66.7% vs 88.6%, P = 0.036). There was no significant difference in overall survival between patients with or without PC(median 48 d vs 70 d, P = 0.21), but patients showed significantly longer survival after clinical success of SEMS placement compared to those experiencing clinical failure(median 14.5 d vs 75 d, P = 0.0003).CONCLUSION Given the limited therapeutic options and a clinical success rate of at least 66.7%, we believe that SEMS are a reasonable treatment option in patients with malignant gastric outlet obstruction with peritoneal carcinomatosis.

关键词： Gastric outlet obstruction Self-expanding metal stents Peritoneal carcinomatosis Palliation Endoscopy

Femoral Access with Ultrasound-Guided Puncture and Z-Stitch Hemostasis for Adults with Congenital Heart Diseases Undergoing Electrophysiological Procedures

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Congenital Heart Disease 2024年第1期19卷 85-92页

作者： Fu Guan matthias Gass Florian Berger Heiko schneider Firat Duru Thomas Wolber Arrhythmia and Electrophysiology Division Department of CardiologyUniversity Heart Center ZurichZurichSwitzerland Children’s Research Center Zurich University Children’s HospitalZurichSwitzerland Center for Integrative Human Physiology University of ZurichZurichSwitzerland

Aims:Although the application of ultrasound-guided vascular puncture and Z-stitch hemostasis to manage femoral access has been widely utilized,there is limited data on this combined application in adult congenital heart disease(ACHD)patients undergoing electrophysiological(EP)*** sought to evaluate the safety and efﬁcacy of ultrasound-guided puncture and postprocedural Z-stitch hemostasis for ACHD patients under-going EP *** and Results:The population of ACHD patients undergoing transfemoral EP pro-cedures at the University of Zurich Heart Center between January 2019 and December 2022 was observed and *** the study period,femoral access(left/right,arterial/venous)was performed under real-time ultrasound *** the end of the procedure,a single Z-stitch was performed at the puncture *** eval-uated the incidence of in-hospital complications associated with femoral access puncture in this *** 101 patients who had a total of 147 previous ipsilateral vascular punctures(mean 1.5 per person),100 patients underwent successful femoral vascular access for EP *** median age of the patients was 47±15 years and 34(34%)were male.Z-stitches were performed after the procedure in 100 patients with 303 femoral vascular accesses(mean 3 punctures per person).No patient developed vascular puncture relevant inguinal hematoma,pseudo aneurysm,arteriovenousﬁstula,venous or arterial ***:In ACHD patients undergoing EP procedures,optimal femoral access management can be achieved with ultra-sound-guided puncture and postprocedural Z-stitch hemostasis.

关键词： Congenital heart disease cardiac electrophysiology cardiac catheterization femoral access hemostasis

Colorectal cancer of the young displays distinct features of aggressive tumor biology:A single-center cohort study

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World Journal of Gastrointestinal Surgery 2021年第2期13卷 164-175页

作者： Matteo Mueller Marcel Andre schneider Barla Deplazes Daniela Cabalzar-Wondberg Andreas Rickenbacher matthias Turina Department of Surgery and Transplantation University Hospital ZurichZurich 8091Switzerland

BACKGROUND In recent years,a decrease in incidence and mortality of colorectal cancer(CRC)has been observed in developed nations,presumably through public disease awareness and increased screening ***,a rising incidence of CRC in young patients below the age of 50 years has been reported in several *** To study tumor biology in CRC patients below 50 years of *** All patients with CRC were prospectively enrolled in our single-center oncologic database from January 2013 to December 2018 and were grouped and analyzed according to age(≥50 and<50 years).Clinical as well as histopathological features were analyzed and *** study was approved by the local Ethics ***’s exact test or t-test was used to test for differences between the groups,as *** statistical analysis was performed with IBM SPSS software Version 25(SPSS Inc,Armonk,NY,United States)and with RStudio using R Version 3.4.1(RStudio,Boston,MA,United States).RESULTS Seventeen percent of the 411 patients were younger than 50 *** patients were more often diagnosed with locally advanced T4-tumors and lymph node metastases(36.6%and 62%vs 17.7%and 42%;P<0.01).In addition,a higher frequency of poorly differentiated(G3)tumors(40%vs 22.4%P<0.05)was *** than every second patient below 40 years of age(51.8%)had distant metastases at diagnosis with a significant higher rate ring of signet cell differentiation compared to patients≥50 years(14.8%,P<0.05).Mutational status(KRAS,NRAS,BRAF,MSI)as well as selected behavioral risk factors showed no significant *** Distinct histopathologic features of increased biologic aggressiveness are found in patients with CRC of *** patients present more frequently with more advanced tumor stages compared to older *** of aggressive tumor biology underscore the need for earlier uptake of routine screening measures.

关键词： Young-onset colorectal cancer Tumor biology Colorectal surgery Tumor aggressiveness Colorectal cancer Colorectal cancer screening

Development of Bulk Organic Chemical Processes—History,Status,and Opportunities for Academic Research

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CCS Chemistry 2021年第3期3卷 512-530页

作者： Carolin schneider Thomas Leischner Pavel Ryabchuk Ralf Jackstell Kathrin Junge matthias Beller Leibniz-Institut für Katalyse e.V. 18059 Rostock Galapagos NV 2800 Mechelen

The production of bulk organic chemicals has a strong impact on our daily *** this review,an overview of important industrial processes using homogeneous catalysts is *** specific carbonylation and hydrogenation case studies,we want to show how basic research can contribute to the development of such processes and what challenges exist in this area of academic research.

关键词： catalysis bulk chemicals chemical processes sustainability methanol carbonylation hydrogenation