¿Cómo puede ayudar la tecnología de Olympus a reducir el número de biopsias?

El NBI se ha sometido a numerosos estudios para evaluar su capacidad de detectar y diagnosticar lesiones gastrointestinales: La precisión diagnóstica del NBI para lesiones colorrectales es superior al 90%. Por ello, el NBI con doble enfoque puede ayudar a reducir la necesidad de biopsias antes del tratamiento. El doble enfoque aumentó el coeficiente de decisiones de alta confianza. (9) Por ello, el NBI con doble enfoque puede ayudar a reducir la necesidad de lesiones por biopsia antes del tratamiento.

El NBI ha demostrado ser una modalidad fiable para biopsias dirigidas en casos de síndrome de Barrett, identificando más neoplasia con menos biopsias. (10,11) Aunque la biopsia no puede evitarse por completo, el NBI puede mejorar la calidad y la rentabilidad de los procesos de control de los casos con síndrome de Barrett.

Las Agencias europeas y americanas de gastroenterología han optado por el uso del NBI para el diagnóstico óptico de pólipos colorrectales (ESGE, ASGE, NICE) (25,26 ,48) y la biopsia dirigida para los controles del síndrome de Barrett (ASGE). (46) La biopsia selectiva con tecnología NBI también se está investigando para otras indicaciones gastrointestinales y parece una herramienta prometedora para mejorar los resultados clínicos. (12,13)

NICE accredited

¿Qué problemas surgen con las biopsias?

Aunque las biopsias solo son pequeñas intervenciones quirúrgicas con un riesgo mínimo para el paciente (1) , esto puede ser diferente en los pacientes medicados con anticoagulantes. (1) En conjunto, las biopsias son valiosas para estratificar el riesgo con índices muy bajos de complicaciones. El mayor inconveniente es el coste del análisis histológico.

Según las directrices actuales, las biopsias se llevan a cabo en puntos aleatorios para hacer el seguimiento de pacientes con síndrome de Barrett, con lesiones gástricas o con alto riesgo de CCR (p. ej., con enfermedad inflamatoria intestinal). (2,3,4) La mayoría de estas biopsias no contienen tejido displásico, ya que no son selectivas, lo que se traduce en unos costes altos y una capacidad de detección moderada, lo que justifica la necesidad de buscar una técnica más eficiente. (5,6)


«El NBI es la única cromoendoscopia virtual que usa una clasificación validada y reconocida internacionalmente, la clasificación NICE, y se puede usar en la práctica clínica diaria.»

Prof. Thierry Ponchon
Edouard Herriot Hospital
Director de departamento, Dpto. de enfermedades digestivas
Lyon, France

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Ensayos clínicos

  1. 1.Update on Endoscopic Tissue Sampling Devices. Technology Assessment Committe et al. Gastrointest Endosc. 2006 May;63(6):741-5.
  2. 2.The Role of Endoscopy in Barrett‘s Esophagus and Other Premalignant Conditions of the Esophagus. ASGE Standards of Practice Committee, Evans JA et al. Gastrointest Endosc. 2012 Dec;76(6):1087-94. doi: 10.1016/j.gie.2012.08.004.
  3. 3.American Gastroenterological Association Institute Guideline on the Role of Upper Gastrointestinal Biopsy to Evaluate Dyspepsia in the Adult Patient in the Absence of Visible Mucosal Lesions Yang YX, Brill J et al. Gastroenterology. 2015 Oct;149(4):1082-7. doi: 10.1053/j.gastro.2015.07.039. Epub 2015 Aug 14.
  4. 4.The Role of Endoscopy in Inflammatory Bowel Disease American Society for Gastrointestinal Endoscopy Standards of Practice Committee et al. Gastrointest Endosc. 2015 May;81(5):1101-21.e1-13. doi: 10.1016/j. ie.2014.10.030. Epub 2015 Mar 20.
  5. 5.The Seattle Protocol Does Not More Reliably Predict the Detection of Cancer at the Time of Esophagectomy Than a Less Intensive Surveillance Protocol Kariv R, Plesec TP et al. Clin Gastroenterol Hepatol. 2009 Jun;7(6):653-8; quiz 606. doi: 10.1016/j. cgh.2008.11.024. Epub 2008 Dec 13.
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  7. 7.Validation of a Simple Classification System for Endoscopic Diagnosis of Small Colorectal Polyps Using Narrow-Band Imaging Hewett DG, Kaltenbach T et al. Gastroenterology. 2012 Sep;143(3):599-607.e1. doi:
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  8. 8.Endoscopic Prediction of Deep Submucosal Invasive Carcinoma: Validation of the Narrow-Band Imaging International Colorectal Endoscopic (NICE) Classification Hayashi N, Tanaka S et al. Gastrointest Endosc. 2013 Oct;78(4):625-32. doi: 10.1016/j.gie.2013.04.185. Epub 2013 Jul 30.
  9. 9.Narrow-Band Imaging with Dual Focus Magnification in Differentiating Colorectal Neoplasia Singh R, Jayanna M et al. Dig Endosc. 2013 May;25 Suppl 2:16-20. doi: 10.1111/den.12075.
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  11. 11.Advanced Imaging Technologies Increase Detection of Dysplasia and Neoplasia in Patients with Barrett‘s Esophagus: A Meta-Analysis and Systematic Review Qumseya BJ, Wang H et al. Clin Gastroenterol Hepatol. 2013 Dec;11(12):1562-70.e1-2. doi: 10.1016/j. cgh.2013.06.017. Epub 2013 Jul 12.
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  13. 13.Narrow Band Imaging with Magnification Endoscopy for Celiac Disease: Results from a Prospective, Single-Center Study De Luca L, Ricciardiello L et al. Diagn Ther Endosc. 2013;2013:580526. doi: 10.1155/2013/580526. Epub 2013 Aug 6.
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  16. 16.Impact of Bowel Preparation with Low-Volume (2-Liter) and Intermediate-Volume (3-Liter) Polyethylene Glycol on Colonoscopy Quality: A Prospective Observational Study Cheng CL, Kuo YL et al. Digestion. 2015;92(3):156-64.
  17. 17.Adenoma Detection Rate Is not Influenced by the Timing of Colonoscopy When Performed in Half-Day Blocks Gurudu SR, Ratuapli SK et al. Am J Gastroenterol. 2011 Aug;106(8):1466-71. doi: 10.1038/ajg.2011.125. Epub 2011 Apr 19.
  18. 18.A Patient-Blinded Randomized, Controlled Trial Comparing Air Insufflation, Water Immersion, and Water Exchange During Minimally Sedated Colonoscopy Hsieh YH, Koo M et al. Am J Gastroenterol. 2014 Sep;109(9):1390-400. doi: 10.1038/ajg.2014.126. Epub 2014 Jun 3.
  19. 19.High Definition Colonoscopy vs. Standard Video Endoscopy for the Detection of Colonic Polyps: A Meta-Analysis Subramanian V, Mannath J et al. Endoscopy. 2011 Jun;43(6):499-505. doi: 10.1055/s-0030-1256207. Epub 2011 Feb 28.
  20. 20.Detection of Colorectal Adenoma by Narrow Band Imaging (HQ190) vs. High-Definition White Light Colonoscopy: A Randomized Controlled Trial Leung WK, Lo OS et al. Am J Gastroenterol. 2014 Jun;109(6):855-63. doi: 10.1038/ajg.2014.83. Epub 2014 Apr 22.
  21. 21.Next-Generation Narrow Band Imaging System for Colonic Polyp Detection: A Prospective Multicenter Randomized Trial Horimatsu T, Sano Y et al. Int J Colorectal Dis. 2015 Jul;30(7):947-54. doi: 10.1007/s00384-015-2230-x. Epub 2015 Apr 30.
  22. 22.Narrow Band Imaging to Differentiate Neoplastic and Non-Neoplastic Colorectal Polyps in Real Time: A Meta-Analysis of Diagnostic Operating Characteristics McGill SK, Evangelou E et al. Gut. 2013 Dec;62(12):1704-13. doi: 10.1136/gutjnl-2012-303965. Epub 2013 Jan 7.
  23. 23.Diagnostic Performance of Narrowed Spectrum Endoscopy, Autofluorescence Imaging, and Confocal Laser Endomicroscopy for Optical Diagnosis of Colonic Polyps: A Meta-Analysis Wanders LK, East JE et al. Lancet Oncol. 2013 Dec;14(13):1337-47. doi: 10.1016/S1470-2045(13)70509-6. Epub 2013 Nov 13.
  24. 24.ASGE Technology Committee Systematic Review and Meta-Analysis Assessing the ASGE PIVI Thresholds for Adopting Real-Time Endoscopic Assessment of the Histology of Diminutive Colorectal Polyps ASGE Technology Committee et al. Gastrointest Endosc. 2015 Mar;81(3):502.e1-502.e16. doi:
    10.1016/j.gie.2014.12.022. Epub 2015 Jan 16.
  25. 25.Real-Time Optical Diagnosis for Diminutive Colorectal Polyps Using Narrow-Band Imaging: The VALID Randomised Clinical Trial Kaltenbach T, Rastogi A et al. Gut. 2015 Oct;64(10):1569-77. doi: 10.1136/gutjnl-2014-307742. Epub 2014 Nov 11.
  26. 26.Advanced imaging for detection and differentiation of colorectal neoplasia: European Society of Gastrointestinal Endoscopy (ESGE) Guideline - Update 2019 Bisshops et al. Endoscopy 2019; 51: 1155–1179
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  32. 32.Does “Responsive Insertion Technology” Improve Practice of Colonoscopy? Results of a Randomized Study Cuesta R, Sola-Vera J et al. Scand J Gastroenterol. 2014 Mar;49(3):355-61. doi:
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  33. 33.Conscious Sedation and Analgesia in Colonoscopy [...] Khajavi M, Emami A et al. Anesth Pain Med. 2013 Summer;3(1):208-13. doi: 10.5812/aapm.9653. Epub 2013 Jul 1.
  34. 34.Safety Analysis of Endoscopist-Directed [...] Sieg A; bng-Study-Group et al. Sieg A; bng-Study-Group et al.
  35. 35.Position Change During Colonoscope Withdrawal Increases Polyp and Adenoma Detection in the Right but not in the Left Side of the Colon: Results of a Randomized Controlled Trial Ball AJ, Johal SS et al. Gastrointest Endosc. 2015 Sep;82(3):488-94. doi: 10.1016/j.gie.2015.01.035. Epub 2015 Apr 22.
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  37. 37.[...] Sedation for Colonoscopy with a New Ultrathin or a Standard Endoscope: A Prospective Randomized Controlled Study Töx U, Schumacher B et al. Endoscopy. 2013 Jun;45(6):439-44. doi: 10.1055/s-0032-1326270. Epub 2013 Mar 6.
  38. 38.Long-Term Colorectal-Cancer Incidence and Mortality after Lower Endoscopy Nishihara R, Wu K et al. N Engl J Med. 2013 Sep 19;369(12):1095-105. doi: 10.1056/NEJMoa1301969
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