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| 1 | Endoscopic ultrasonography for gastric submucosal lesions显示文摘Gastric submucosal tumors(SMTs) are a rather frequent finding,occurring in about 0.36%of routine upper GIendoscopies.Endoscopic ultrasonography(EUS) has emerged as a reliable investigative procedure for evaluation of these lesions.Diagnostic EUS has the ability to differentiate intramural tumors from extraluminal compressions and can also show the layer of origin of gastric SMTs.Tumors can be further characterized by their layer of origin,echo pattern and margin.EUS-risk criteria of their malignant potential are presented,although the emergence of EUS-FNA has opened new indications for transmural tissue diagnosis and expanded the possibilities of EUS in SMTs of the stomach.Tissue diagnosis should address whether the SMT is a Gastrointestinal stromal tumour(GIST) or another tumor type and evaluate the malignant potential of a given GIST.However,there seems to be a lack of data on the optimal strategy in SMTs suspected to be GISTs with a negative EUS-FNA tissue diagnosis.The current management strategies,as well as open questions regarding their treatment are also presented. | Ioannis S Papanikolaou Konstantinos Triantafyllou Anastasia Kourikou Thomas Rsch | 2011 | World Journal of Gastrointestinal Endoscopy2011,3,5: | 44 |
| 2 | Development of a hybrid photoacoustic and optical monitoring system for the study of laser ablation processes upon the removal of encrustation from stonework显示文摘In the context of this work,a prototype hybrid photoacoustic(PA)and optical system for the on-line monitoring of laser cleaning procedures is presented.The developed apparatus has enabled the detection of MHz frequency range acoustic waves generated during the laser ablation process.The intrinsically generated PA signals combined with high resolution optical images provide the opportunity to follow the cleaning process accurately and in real time.Technical mock-ups have been used to demonstrate the potential of this novel technique with emphasis given to applications that refer to the restoration of Cultural Heritage(CH)surfaces.Towards this purpose,the real time monitoring of the laser assisted removal of unwanted encrustation from stonework has been achieved using IR and UV wavelengths.This novel approach has allowed for the precise determination of the critical number of laser pulses required for the elimination of the encrustation layer,while highlighting the dominant ablation mechanisms according to the irradiation wavelength.The promising results obtained using the prototype hybrid PA and optical system can open up new perspectives in the monitoring of laser cleaning interventions,promoting an improved restoration outcome. | Athanasia Papanikolaou George JTserevelakis Kristalia Melessanaki Costas Fotakis Giannis Zacharakis Paraskevi Pouli | 2020 | Opto-Electronic Advances2020,3,2: | 11 |
| 3 | Patterns of airway involvement in inflammatory bowel diseases显示文摘Extraintestinal manifestations occur commonly in inflammatory bowel diseases(IBD). Pulmonary manifestations(PM) of IBD may be divided in airway disorders, interstitial lung disorders, serositis, pulmonary vasculitis, necrobiotic nodules, drug-induced lung disease, thromboembolic lung disease and enteropulmonary fistulas. Pulmonary involvement may often be asymptomatic and detected solely on the basis of abnormal screening tests. The common embryonic origin of the intestine and the lungs from the primitive foregut, the co-existence of mucosa associated lymphoid tissue in both organs, autoimmunity, smoking and bacterial translocation from the colon to the lungs may all be involved in the pathogenesis of PM in IBD. PM are mainly detected by pulmonary function tests and highresolution computed tomography. This review will focus on the involvement of the airways in the context of IBD, especially stenoses of the large airways, tracheo-bronchitis, bronchiectasis, bronchitis, mucoid impaction, bronchial granulomas, bronchiolitis, bronchiolitis obliterans syndrome and the co-existence of IBD with asthma, chronic obstructive pulmonary disease, sarcoidosis and a1-antitrypsin deficiency. | Ilias Papanikolaou Konstantinos Kagouridis Spyros A Papiris | 2014 | World Journal of Gastrointestinal Pathophysiology2014,5,4: | 7 |
| 4 | Facing the challenge of venous thromboembolism prevention in patients undergoing major abdominal surgical procedures for gastrointestinal cancer显示文摘Venous thromboembolism(VTE)refers to a hypercoa-gulable state that remains an important and preven-table factor in the surgical treatment of malignancies.VTE includes two identical entities with regards to deep vein thrombosis and pulmonary embolism.The incidence of VTE after major abdominal interventions for gastro-intestinal,hepato-biliary and pancreatic neoplastic disor-ders is as high as 25%without prophylaxis.Prophylactic use of classic or low-molecular-weight heparin,anti-Xa factors,antithrombotic stocking,intermittent pneumatic compression devices and early mobilization have been described.Nevertheless,thromboprophylaxis is often dis-continued after discharge,although a serious risk may persist long after the initial triggering event,as the coagu-lation system remains active for at least 14 d post-opera-tively.The aim of this review is to evaluate the results of the current practice of VTE prevention in cancer patients undergoing major abdominal surgical operations,with special attention to adequately elucidated guidelinesand widely accepted protocols.In addition,the recent literature is presented in order to provide an update on the current concepts concerning the surgical manage-ment of the disease. | Aikaterini Mastoraki Sotiria Mastoraki Dimitrios Schizas Raphael Patras Nikolaos Krinos Ioannis S Papanikolaou Andreas Lazaris Theodore Liakakos Nikolaos Arkadopoulos | 2018 | World Journal of Gastrointestinal Oncology2018,10,10: | 7 |
| 5 | Colonoscopy attachments for the detection of precancerous lesions during colonoscopy:A review of the literature显示文摘Although colonoscopy has been proven effective in reducing the incidence of colorectal cancer through the detection and removal of precancerous lesions, it remains an imperfect examination, as it can fail in detecting up to almost one fourth of existing adenomas. Among reasons accounting for such failures, is the inability to meticulously visualize the colonic mucosa located either proximal to haustral folds or anatomic curves, including the hepatic and splenic flexures. In order to overcome these limitations, various colonoscope attachments aiming to improve mucosal visualization have been developed. All of them-transparent cap, Endocuff, Endocuff Vision and Endorings-are simply mounted onto the distal tip of the scope. In this review article, we introduce the rationale of their development, present their mode of action and discuss in detail the effect of their implementation in the detection of lesions during colonoscopy. | Paraskevas Gkolfakis Georgios Tziatzios Eleftherios Spartalis Ioannis S Papanikolaou Konstantinos Triantafyllou | 2018 | World Journal of Gastroenterology2018,24,37: | 5 |
| 6 | Two cameras detect more lesions in the small-bowel than one显示文摘AIM:To explore the feasibility of dual camera capsule (DCC)small-bowel(SB)imaging and to examine if two cameras complement each other to detect more SB lesions.METHODS:Forty-one eligible,consecutive patients underwent DCC SB imaging.Two experienced investigators examined the videos and compared the total number of detected lesions to the number of lesions detected by each camera separately.Examination tolerability was assessed using a questionnaire.RESULTS:One patient was excluded.DCC cameras detected 68 positive findings(POS)in 20(50%)cases.Fifty of them were detected by the'yellow'camera,48 by the'green'and 28 by both cameras;44%(n=22)of the'yellow'camera’s POS were not detected by the'green'camera and 42%(n=20)of the'green' camera’s POS were not detected by the'yellow'camera.In two cases,only one camera detected significant findings.All participants had 216 findings of unknown significance(FUS).The'yellow','green'and both cameras detected 171,161,and 116 FUS,respectively;32%(n=55)of the'yellow'camera’s FUS were not detected by the'green'camera and 28%(n=45)of the'green'camera’s FUS were not detected by the 'yellow'camera.There were no complications related to the examination,and 97.6%of the patients would repeat the examination,if necessary.CONCLUSION:DCC SB examination is feasible and well tolerated.The two cameras complement each other to detect more SB lesions. | Konstantinos Triantafyllou Ioannis S Papanikolaou Kostis Papaxoinis Spiros D Ladas | 2011 | World Journal of Gastroenterology2011,17,11: | 5 |
| 7 | Respiratory gated diffusion-weighted imaging of the liver: value of apparent diffusion coefficient measurements in the differentiation between most commonly encountered benign and malignant focal liver lesions显示文摘 | Sofia Gourtsoyianni Nickolas Papanikolaou Spyros Yarmenitis Thomas Maris Apostolos Karantanas Nicholas Gourtsoyiannis | 2008 | European Radiology2008,,3: | 4 |
| 8 | An unusual case of prolonged post-endoscopic retrograde cholangiopancreatography jaundice显示文摘Despite the effectiveness of endoscopic retrograde cholangiopancreatography(ERCP) for the treatment of choledocholithiasis, various complications have been described. We herein report the first case of prolonged postERCP jaundice due to toxicity of the contrast agent Iobitridol(~174;XENETIX, Guerbet, Roissy Cd G Cedex, France) in a patient who underwent ERCP with sphincterectomy and common bile duct stone removal. While clinical improvement and normalization of aminotransferases and cholestatic enzymes after the procedure, an unexplained increase of direct bilirubin was noticed. A second ERCP was performed one week later, excluding possible remaining choledocholithiasis. Nevertheless, serum direct bilirubin increased further up to 15 mg/d L. Other potential causes of direct hyperbilirubinemia were ruled out and patient's liver biopsy was compatible with drug-induced liver toxicity. Additionally, the cause-result time connection between the use of Iobitridol and bilirubin increase indicated the possibility of a toxic effect related to the repeated use of the particular contrast agent. Iobitridol, a contrast agent, can induce prolonged direct hyperbilirubinemia. | Georgios Tziatzios Paraskevas Gkolfakis Ioannis S Papanikolaou George Dimitriadis Konstantinos Triantafyllou | 2016 | Hepatobiliary & Pancreatic Diseases International2016,15,2: | 4 |
| 9 | Improved bowel preparation increases polyp detection and unmasks significant polyp miss rate显示文摘AIM: To retrospectively compare previous-day vs splitdose preparation in terms of bowel cleanliness and polyp detection in patients referred for polypectomy. METHODS: Fifty patients underwent two colonoscopies: one diagnostic in a private clinic and a second for polypectomy in a University Hospital. The latter procedures were performed within 12 wk of the index ones. Examinations were accomplished by two experienced endoscopists, different in each facility. Twenty-seven patients underwent screening/surveillance colonoscopy, while the rest were symptomatic. Previous day bowel preparation was utilized initially and splitdose for polypectomy. Colon cleansing was evaluated using the Aronchick scale. We measured the number of detected polyps, and the polyp miss rates per-polyp.RESULTS: Excellent/good preparation was reported in 38 cases with previous-day preparation(76%) vs 46 with split-dose(92%), respectively(P = 0.03). One hundred and twenty-six polyps were detected initially and 169 subsequently(P < 0.0001); 88 vs 126 polyps were diminutive(P < 0.0001), 25 vs 29 small(P = 0.048) and 13 vs 14 equal or larger than 10 mm. The miss rates for total, diminutive, small and large polyps were 25.4%, 30.1%, 13.7% and 6.6%, respectively. Multivariate analysis revealed that split-dose preparation was significantly associated(OR, P) with increased number of polyps detected overall(0.869, P < 0.001), in the right(0.418, P = 0.008) and in the left colon(0.452, P = 0.02). CONCLUSION: Split-dose preparation improved colon cleansing, enhanced polyp detection and unmasked significant polyp miss rates. | Ioannis S Papanikolaou Athanasios D Sioulas Nektarios Magdalinos Iosif Beintaris Lazaros-Dimitrios Lazaridis Dimitrios Polymeros Chrysoula Malli George D Dimitriadis Konstantinos Triantafyllou | 2015 | World Journal of Clinical Cases2015,3,10: | 4 |
| 10 | Role of pancreatic endoscopic ultrasonography in 2010显示文摘Endoscopic ultrasonography (EUS) was introduced 25 years ago aiming at better visualization of the pancreas compared to transabdominal ultrasonography. This update discusses the current evidence in 2010 concerning the role of EUS in the clinical management of patients with pancreatic disease. Major indications of EUS are:(1) Detection of common bile duct stones (e.g. in acute pancreatitis); (2) Detection of small exo-and endocrine pancreatic tumours; and (3) Performance of fine needle aspiration in pancreatic masses depending on therapeutic consequences. EUS seems to be less useful in cases of chronic pancreatitis and cystic pan-creatic lesions. Moreover the constant improvement of computed tomography has limited the role of EUS in pancreatic cancer staging. On the other hand,new therapeutic options are available due to EUS,such as pancreatic cyst drainage and celiac plexus neurolysis,offering a new field in which new techniques may arise. So the main goal of this review is to determine the exact role of EUS in a number of pancreatic and biliary diseases. | Ioannis S Papanikolaou Pantelis S Karatzas Konstantinos Triantafyllou Andreas Adler | 2010 | World Journal of Gastrointestinal Endoscopy2010,2,10: | 3 |
| 11 | 急性阑尾炎的间隔平淡的阑尾切除术追随者保守人士处理: 它确实被需要显示文摘 Conservative management of acute appendicitis (AA) is gradually being adopted as a valuable therapeutic choice in the treatment of selected patients with AA. This approach is based on the results of many recent studies indicating that it is a valuable and effective alternative to routine emergency appendectomy. Existing data do not support routine interval appendectomy following successful conservative management of AA; indeed, the risk of recurrence is low. Moreover, recurrences usually exhibit a milder clinical course compared to the first episode of AA. The role of routine interval appendectomy is also questioned recently, even in patients with AA complicated by plastron or localized abscess formation. Surgical judgment is required to avoid misdiagnosis when selecting a conservative approach in patients with a presumed 'appendiceal' mass. | George H Sakorafas Dimitrios Sabanis Christos Lappas Aikaterini Mastoraki John Papanikolaou Charalambos Siristatidis Vasileios Smyrniotis | 2012 | World Journal of Gastrointestinal Surgery2012,4,4: | 3 |
| 12 | Enhanced fat degradation following the addition of a Pseudomonas species to a bioaugmentation product used in grease traps显示文摘The presence of fats, oils and greases(FOGs) in wastewater can lead to many problems including blockages. Investigation of a bioaugmentation product, consisting of Bacillus spp., to degrade butter(1%, W/V) and olive oil(1%, V/V) was performed in aerobic batch cultures for 13-day incubation. Gravimetric analysis of the remaining substrates showed slowly degradation of the oil after a 2-day lag, but no degradation of the butter. Addition of a Pseudomonas putida strain CP1 to the Bacillus spp. population promoted rapidly degradation of both fats after7 days of incubation. High fat accumulation revealed the potential use of the new bacterial mixture for production of added-value compounds. Lipase production only by the Bacillus spp.along with the analysis of the remaining lipids with thin layer chromatography and gas chromatography, suggested that the Bacillus spp. mainly only hydrolyzed the fat. The breakdown products were metabolized by the Pseudomonas putida CP1 performing preferential utilization of unsaturated fatty acids. Investigation of population dynamics using selective plating and a labeled Pseudomonas putida CP1::Tn7-gfp showed domination of the latter. The new mixture performed a successful cooperation with good potential for FOG treatment and an aggregative response desirable to fat degradation in grease traps. | Markella Tzirita Seraphim Papanikolaou Bríd Quilty | 2019 | Journal of Environmental Sciences2019,31,3: | 2 |
| 13 | Effects of chromium (VI) addition on the activated sludge process显示文摘 | Athanasios S Stasinakis Nikolaos S Thomaidis Daniel Mamais Evangelia C Papanikolaou Angeliki Tsakon Themistokles D Lekkas | 2002 | Water Research2002,,9: | 2 |
| 14 | New endoscopy devices to improve population adherence to colorectal cancer prevention programs显示文摘Despite recent advances in medicine,colorectal cancer (CRC)remains one of the greatest hazards for public health worldwide and especially the industrialized world.It has been well documented with concrete data that regular screening colonoscopy aimed at early detection of precancerous polyps can help decrease the incidence of CRC.However,the adherence of the general population to such screening programs has been shown to be lower than that expected,thus allowing CRC to remain a major threat for public health.Various reasons have been suggested to explain the disappointing compliance of the population to CRC screening programs,some of them associated with colonoscopy per se,which is viewed by many people as an unpleasant examination.Governments,medical societies,individual gastroenterologists,as well as the medical industry are working in order to improve endoscopic devices and/or to improve standard colo-noscopy.The aim is to improve the acceptance of the population for this method of CRC screening,by providing a painless and reliable examination of the colon.This review focuses on some of the latest improve-me-nts in this fie-ld. | Asimina Gaglia Ioannis S Papanikolaou Wilfried Veltzke-Schlieker | 2010 | World Journal of Gastrointestinal Endoscopy2010,2,7: | 2 |
| 15 | Management of primary retroperitoneal synovial sarcoma: A case report and review of literature显示文摘BACKGROUND Synovial sarcoma(SS) is a rare type of soft tissue sarcoma that is usually developed from areas where synovial tissue exists, especially at the extremities.Nevertheless, several cases of retroperitoneal SS(RSS) have been described. We herein report a case of RSS presented in our institution.CASE SUMMARY A 69-year-old female patient was admitted with a large, palpable, firm mass in the right abdominal space SS. Computerized tomography scan depicted a concentric, sharply marinated retro-peritoneal lesion which was displacing the right kidney and the lower edge of the liver. Subsequently, the patient underwent surgical excision of the mass with additional right nephrectomy and resection of the right adrenal gland and a part of the diaphragm. The final histological diagnosis of the tumour was grade II monophasic RSS.CONCLUSION RSS is encountered in the biphasic type, the monophasic fibrous, and the monophasic epithelial category as well. Relevant clinical manifestations are not always documented at early stages. Therefore, the final diagnosis is posed after complete histological examination taking into consideration the results of immunochemistry and genetic analysis. Therapeutic approach happens often late when metastases at the lungs and the liver are apparent. Thus, 5-year survival rates remain low. | Aikaterini Mastoraki Dimitrios Schizas Ioannis S Papanikolaou George Bagias Nikolaos Machairas George Agrogiannis Theodore Liakakos Nikolaos Arkadopoulos | 2019 | World Journal of Gastrointestinal Surgery2019,11,1: | 2 |
| 16 | Hepatitis B prophylaxis post liver transplantation with newer nucleos(t)ide analogues after hepatitis B immunoglobulin discontinuation显示文摘 | E. Cholongitas T. Vasiliadis N. Antoniadis I. Goulis V. Papanikolaou E. Akriviadis | 2012 | Transpl Infect Dis2012,,5: | 2 |
| 17 | Improved Formula for Estimating Added Resistance of Ships in Engineering Applications显示文摘作者以前介绍了在头波浪,并且在这研究启用了轮船的增加的抵抗的快评价的一个半实验的公式公式进一步在设计应用为容易的使用被精制。它包括一个其他的轮船草稿修正系数,它更好与轮船草稿说明波浪压力腐烂。另外,它仅仅把速度和轮船和波浪环境的主要特征用作输入,并且被简化了到它能乐意地用一个袖珍计算器被处理的程度。广泛的确认为不同轮船类型被进行在对处于各种各样的典型的不规则的海条件的中等速度低、令人鼓舞结果被获得。这相关、热门的研究躺在最近的 IMO MEPC.232 (65 )(2013 ) 的框架以内为估计在不利天气轮船驱动的最小的 EEDI 指南在设计应用以内调节水平 2 评价,它在电流为简单方法的使用指定。 | Shukui Liu Baoguo Shang Apostolos Papanikolaou Victor Bolbot | 2016 | Journal of Marine Science and Application2016,15,4: | 2 |
| 18 | Abnormal DNA methylation as a cell-free circulating DNA biomarker for colorectal cancer detection:A review of literature显示文摘Colorectal cancer(CRC) is one of the most prevalent malignancies in the world. CRC-associated morbidity and mortality is continuously increasing, in part due to a lack of early detection. The existing screening tools such as colonoscopy, are invasive and yet high cost, affecting the willingness of patients to participate in screening programs. In recent years, evidence is accumulating that the interaction of aberrant genetic and epigenetic modifications is the cornerstone for the CRC development and progression by alternating the function of tumor suppressor genes, DNA repair genes and oncogenes of colonic cells. Apart from the understanding of the underlying mechanism(s) of carcinogenesis, the aforementioned interaction has also allowed identification of clinical biomarkers, especially epigenetic, for the early detection and prognosis of cancer patients. One of the ways to detect these epigenetic biomarkers is the cell-free circulating DNA(circ DNA), a blood-based cancer diagnostic test, mainly focusing in the molecular alterations found in tumor cells, such as DNA mutations and DNA methylation.In this brief review, we epitomize the current knowledge on the research in circ DNA biomarkers-mainly focusing on DNA methylation-as potential blood-based tests for early detection of colorectal cancer and the challenges for validation and globally implementation of this emergent technology. | Michail Galanopoulos Nikolaos Tsoukalas Ioannis S Papanikolaou Maria Tolia Maria Gazouli Gerassimos J Mantzaris | 2017 | World Journal of Gastrointestinal Oncology2017,9,4: | 2 |
| 19 | Sepsis severity is the major determinant of circulating thrombopoietin levels in septic patients显示文摘 | Zakynthinos SG Papanikolaou S Theodoridis T | 2004 | Crit Care Med2004,32,4: | 1 |
| 20 | An update of luteal phase support in stimulated IVF CYcles显示文摘 | Fatemi HM Popovic-Todorovic B Papanikolaou E | 2007 | Hum Reprod2007,13,6: | 1 |