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| 1 | Pseudopolyps in inflammatory bowel diseases: Have we learned enough?显示文摘Pseudopolyps are a well described entity in the literature and even though the exact pathogenesis of their formation is not completely understood, they are considered non-neoplastic lesions originating from the mucosa after repeated periods of inflammation and ulceration associated with excessive healing processes. Their occurrence is less common in Crohn's disease than in ulcerative colitis, and their overall prevalence ranges from 4% to 74%; moreover, they are found more often in colon but have been detected in other parts of the gastrointestinal tract as well. When their size exceeds the arbitrary point of 1.5 cm, they are classified as giant pseudopolyps. Clinical evaluation should differentiate the pseudopolyps from other polypoid lesions, such as the dysplasiaassociated mass or lesion, but this situation represents an ongoing clinical challenge. Pseudopolyps can provoke complications such as bleeding or obstruction, and their management includes medical therapy, endoscopy and surgery; however, no consensus exists about the optimal treatment approach. Patients with pseudopolyps are considered at intermediate risk for colorectal cancer and regular endoscopic monitoring is recommended. Through a review of the literature, we provide here a proposed classification of the characteristics of pseudopolyps. | Dimitrios S Politis Konstantinos H Katsanos Epameinondas V Tsianos Dimitrios K Christodoulou | 2017 | World Journal of Gastroenterology2017，23，9： | 8 |
| 2 | Competition between fusion-evaporation and multifragmentation in central collisions in ^(58)Ni+^(48)Ca at 25A MeV显示文摘The experimental data concerning the58Ni+48Ca reaction at Elab(Ni)=25A MeV,collected by using the CHIMERA 4π device,have been analyzed in order to investigate the competition among different reaction mechanisms for central collisions in the Fermi energy domain.As a main criterion for centrality selection we have chosen the flow angle(flow) method,making an event-by-event analysis that considers the shape of events,as it is determined by the eigenvectors of the experimental kinetic-energy tensor.For the selected central events(flow >60°) some global variables,good to characterize the pattern of central collisions have been constructed.The main features of the reaction products were explored by using different constraints on some of the relevant observables,like mass and velocity distributions and their correlations.Much emphasis was devoted,for central collisions,to the competition between fusion-evaporation processes with subsequent identification of a heavy residue and a possible multifragmentation mechanism of a well defined(if any) transient nuclear system.Dynamical evolution of the system and pre-equilibrium emission were taken into account by simulating the reactions in the framework of transport theories.Different approaches have been envisaged(dynamical stochastic BNV calculations + sequential SIMON code,QMD,CoMD,etc.).Preliminary comparison of the experimental data with BNV calculations shows reasonable agreement with the assumption of sequential multifragmentation emission in the mass region of IMFs close to the heavy residues.Possible deviations from sequential processes were found for those IMFs in the region of masses intermediate between the mass of heavy residues and the mass of light IMFs.Further simulations are in progress.The experimental analysis will be enriched also by information obtained inspecting the IMF-IMF correlation function,in order to elucidated the nature of space-time decay property of the emitting source associated with events having the largest IMF multiplicity. | FRANCALANZA L ABBONDANNO U AMORINI F BARLINI S BINI M BOUGAULT R BRUNO M CARDELLA G CASINI G AGOSTINO M D' De FILIPPO V De SANCTIS J GERACI E GIUSSANI A GRAMEGNA F GUIOT B KRAVCHUK V La GUIDARA E LANZALONE G Le NEINDRE N MAIOLINO C MARINI P MORELLI L OLMI A PAGANO A PAPA M PIANTELLI S PIRRONE S POLITI G POGGI G PORTO F RUSSOTTO P RIZZO F VANNINI G VANNUCCI L | 2013 | Nuclear Science and Techniques2013，24，5： | 2 |
| 3 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | PAO W MILLER V A POLITI K A | 2005 | PloS Med2005，2，3： | 1 |
| 4 | Acquired re sistance of lung adenocarcinomas to gefitinib or erlo- tinib is associated with a second mutation in the EG- FR kinase domain显示文摘 | Pao W Miller V A Politi K A | 2005 | PLoS medicine2005，2，33： | 1 |
| 5 | Aeroelastic stability of wind turbines: the problem, the methods and the issues 显示文摘 | Riziotis V A Voutsinas S G Politis E S | 2004 | Wind Energy2004，7，： | 1 |
| 6 | Crystallization and X-ray diffraction measurements of a thermophilic archaeal recombinant amidase from Sulfolobus solfataricus MT4显示文摘 | Nastopoulos V Vallone B Politi L | 2001 | Acta Crystallogr D Biol Crystallogr2001，57，7： | 1 |
| 7 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | Pao W Miller V A Politi K A | 2005 | PLoS Medicine2005，2，3： | 1 |
| 8 | A boundary integral equation method for oblique water- wave scattering by cylinders governed by the modified Helmhohz equation 显示文摘 | Politis C G Papalexandris M V Athanassoulis C A | 2002 | Applied Ocean Research2002，24，4： | 1 |
| 9 | CENP-C binds the alpha-satelliteDNA in vivo at specific centromere domains显示文摘 | Politi V Perini G Trazzi S | 2002 | J Cell Sci2002，115，11： | 1 |
| 10 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated witha second mutation in the EGFR kinase domain显示文摘 | Pao W Miller V A Politi K A | 2005 | Plos Medicine2005，2，3： | 1 |
| 11 | Rupture of renal lipoma during pregnancy: a case report显示文摘 | Kontos S Politis V Fokitis I | | Cases0，，3： | 1 |
| 12 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | PAO W MILLER V A POLITI K A | 2005 | PLOS Med2005，2，3： | 1 |
| 13 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | Pao W Miller V A Politi K A | 2005 | PLoSMed2005，2，3： | 1 |
| 14 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain 显示文摘 | Pao W Miller V A Politi K A | 2005 | PLoS Med2005，2，3： | 1 |
| 15 | Efficient in vitro labeling of human neural precursor cells with superparamagnetic iron oxide particles:relevance for in vivo cell tracking显示文摘 | Neri M Maderna C Cavazzin C Deidda-Vigoriti V Politi LS Scotti G | | 0，，02： | 1 |
| 16 | Acquired resist-ance of lung adenocarcinomas to gefitinib or erlotinib isassociated w ith a second mutation in the EGFR kinase do-main显示文摘 | Pao W Miller V A Politi K A | 2005 | PLoS Med2005，2，3： | 1 |
| 17 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | Pao W Miller V Politi K | 2005 | PLoS Med2005，2，3： | 1 |
| 18 | Aeroelastic stability of wind turbines: the problem, the methods and the issues显示文摘 | Riziotis V A Voutsinas S G Politis E S | 2004 | Wind Energy2004，，7： | 1 |
| 19 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | PAO W MILLER V A POLITI K A | | 0，，03： | 1 |
| 20 | Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain显示文摘 | PAO W MILLER V A POLITI K A | 2005 | PLoS Med2005，2，3： | 1 |
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