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| 1 | Computed tomography-guided percutaneous core needle biopsy in pancreatic tumor diagnosis显示文摘AIM: To evaluate the techniques, results, and complications related to computed tomography(CT)-guided percutaneous core needle biopsies of solid pancreatic lesions.METHODS: CT-guided percutaneous biopsies of solid pancreatic lesions performed at a cancer reference center between January 2012 and September 2013 were retrospectively analyzed. Biopsy material was collected with a 16-20 G Tru-Core needle(10-15 cm; Angiotech, Vancouver, CA) using a coaxial system and automatic biopsy gun. When direct access to the lesion was not possible, indirect(transgastric or transhepatic) access or hydrodissection and/or pneumodissection maneuvers were used. Characteristics of the patients, lesions, procedures, and histologic results were recorded using a standardized form. RESULTS: A total of 103 procedures included in the study were performed on patients with a mean age of 64.8 year(range: 39-94 year). The mean size of the pancreatic lesions was 45.5 mm(range: 15-195 mm). Most(75/103, 72.8%) procedures were performed via direct access, though hydrodissection and/or pneumodissection were used in 22.2%(23/103) of cases and indirect transhepatic or transgastric access was used in 4.8%(5/103) of cases. Histologic analysis was performed on all biopsies, and diagnoses were conclusive in 98.1%(101/103) of cases, confirming3.9%(4/103) of tumors were benign and 94.2%(97/103) were malignant; results were atypical in 1.9%(2/103) of cases, requiring a repeat biopsy to diagnose a neuroendocrine tumor, and surgical resection to confirm a primary adenocarcinoma. Only mild/moderate complications were observed in 9/103 patients(8.7%),and they were more commonly associated with biopsies of lesions located in the head/uncinate process(n =8), than of those located in the body/tail(n = 1) of the pancreas, but this difference was not significant.CONCLUSION: CT-guided biopsy of a pancreatic lesion is a safe procedure with a high success rate, and is an excellent option for minimally invasive diagnosis. | Chiang J Tyng Maria Fernanda A Almeida Paula NV Barbosa Almir GV Bitencourt José Augusto AG Berg Macello S Maciel Felipe JF Coimbra Luiz Henrique O Schiavon Maria Dirlei Begnami Marcos D Guimares Charles E Zurstrassen Rubens Chojniak | 2015 | World Journal of Gastroenterology2015，21，12： | 14 |
| 2 | Carbon-13 NMR studies of solid urea-formaldehyde resins using cross polarization and magic-angle spinning显示文摘 | Maciel Gary E Szeverenyi Nikolaus M Early Thomas A | 1983 | Macromolecules1983，16，4： | 1 |
| 3 | 显示文摘 | Silva T F Dias J A C Maciel C G | 2013 | Catal Sci Technol2013，3，： | 1 |
| 4 | Using the PhysX engine for physics-based virtual surgery with force feedback 显示文摘 | Maciel A Halic T | 2009 | International Journal of Medical Robotics and Computer Assisted Surgery2009，5，3： | 1 |
| 5 | Development of metal oxide nanoparticles with high stability against particle growth using a metastable solid solution 显示文摘 | Leite E R Maciel A P Weber I T | 2002 | Adv Mater2002，14，： | 1 |
| 6 | Analytical method for evaluation of exposure to benzene,toluene,xylene in blood by gas chromatography preceded by solid phase microextraction显示文摘 | Alegretti A P Thiesen F V Maciel G P | 2004 | Journal of Chromatography B2004，809，： | 1 |
| 7 | Er^3+-doped BaTiO3 nanocrystals for thermometry: Influence of nanoenvironment on the sensitivity of a fluorescence based temperature sensor显示文摘 | ALENCAR M A R C MACIEL G S de ARAUJO C B etal | 2004 | Appl Phy Lett2004，84，23： | 1 |
| 8 | On the performance,complexity,and fairness of suboptimal resource allocation for multiuser MIMO-OFDMA systems显示文摘 | Maciel T F Klein A | 2010 | IEEE Transactions on Vehicular Technology2010，59，1： | 1 |
| 9 | Kefir adminis- tration reduced progression of renal injury in STZ-diabetic rots by lowering oxidative stress显示文摘 | Punaro G R Maciel F R Rodrigues A M | 2014 | Nitric Oxide2014，37，： | 1 |
| 10 | The Bone Morphogenetic Protein Antagonist Gremlin Promotes Vascular Smooth Muscle Cell Apoptosis显示文摘 | Maciel T T Melo R S Campos A H | | 0，，04： | 1 |
| 11 | A trust-regionapproach for solving a parameter estimation problem from the biotechnology area显示文摘 | Ardenghi J I Maciel M C Verdiell A B | | 0，，3： | 1 |
| 12 | Blue cooperative upconversion in Yb3+ -doped multi component sol-gel-processed silica glass for three-dimensional display 显示文摘 | Maciel G Biswas A Kapoor R | 2000 | Appl Phys Lett2000，76，15： | 1 |
| 13 | Development of cosmetic mask formulations显示文摘 | Baby A R Zague V Maciel C P M | 2004 | Rev Bras CiSnc Farm2004，40，： | 1 |
| 14 | Scatter search techniques applied to electromagnetic problems显示文摘 | Vasconcelos J A Maciel J H R D Parreiras R O | 2005 | IEEE Transactions on Magnetics2005，4，5： | 1 |
| 15 | Vasopressin serum levels in patients with severe brain lesions and in brain-dead patients显示文摘 | Cintra Ede A Maciel JA Jr Arau jo S | 2004 | Arq Neuropsiquiatr2004，62，2： | 1 |
| 16 | PCR detection of multiple human herpesvirus DNA in saliva from HIV-infected indi- viduals in Teresina, State of Piaul, Brazil 显示文摘 | Carvalho KS Silvestre Ede A Maciel Sda S | 2010 | Rev Soc Bras Med Trop2010，43，6： | 1 |
| 17 | Blue cooperative upconversion in Yb-doped multicomponent sol-gel-processed silica glass for three-dimensional display显示文摘 | Maciel G S Biswas A Kapoor R | 2000 | Appl Phys Lett2000，76，15： | 1 |
| 18 | Correlation be- tween CAG repeat length and clinical features in Machado-Jo- seph disease显示文摘 | Maciel P Gaspar C DeStefano A L | 1995 | Am J Hum Genet1995，57，1： | 1 |
| 19 | Blue cooperative upconversion in Yb^3+-doped multicomponent sol-gel-processed silica glass for three-dimensional display显示文摘 | Maciel G S Biswas A Kapoor R | 2000 | Applied Physics Letter2000，76，15： | 1 |
| 20 | Simultaneous momentum, mass, and energy transfer analysis of a distillation sieve tray using CFD techniques: prediction of efficiencies显示文摘 | Noriler D Barros A A C Maciel M R W | 2010 | Industrial & Engineering Chemistry Research2010，49，14： | 1 |
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