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      Resección endoscópica mucosa o mucosectomía (EMR) en pólipos complejos del colon. Experiencia clínica en un centro de referencia en Perú (2004-2018) Translated title: Endoscopic Mucosal Resection (EMR) for polyps and complex-adenoma lessions of the colon. Recopilation of 15 years of experience (2004-2018)

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          Abstract

          RESUMEN Antecedentes: La detección y resección de lesiones colónicas elevadas (pólipos) sésiles o planas, con polipectomía clásica o compleja detiene la secuencia adenoma-cáncer. La mucosectomía endoscópica (EMR) fue introducida en los setentas y perfeccionada en los ochentas como un procedimiento avanzado para el tratamiento de pólipos grandes o complejos. Una adecuada realización de la técnica puede evitar procedimientos quirúrgicos mayores. Objetivos: Evaluar los resultados y complicaciones de la técnica de mucosectomía (EMR) realizada por gastroenterólogos-endoscopistas en un centro de referencia del Perú. Revisión de indicaciones, éxito, complicaciones y seguimiento. Material y método: Se realizó un análisis descriptivo, retrospectivo y observacional de pacientes tratados con técnica de mucosectomía endoscópica en un centro de endoscopia de referencia nacional en Lima, Perú, desde enero de 2004 a diciembre de 2018. Se aplicó la técnica de elevación y corte controlado en lesiones polipoideas mayores a 1 cm. Se realizó la resección en bloque en lesiones hasta 3 cms y técnica de "piecemeal" o sacabocado en mayores de 3 cms. Se evaluaron resultados, eventos adversos y recurrencia. Resultados: Se analizaron 756 lesiones en el mismo número de pacientes. Hombres 46.8 % (298) y mujeres 53.2 % (338). La edad promedio fue de 61.9 (rangos 37-91). El tamaño promedio de las lesiones fue de 20,3 mm (10 - 50 mm). El tiempo promedio por procedimiento fue de 46 minutos (rango 20-123 minutos). Se logró resección en bloque en 78.04 % de pólipos (590 lesiones). Se realizó técnica sacabocado en 166 (21.96 %) lesiones. La tasa de complicaciones en nuestra serie fue del 6.74 %, todos manejados endoscópicamente más tratamiento conservador médico sin cirugía. El seguimiento promedio fue de 18 meses (3 - 24 meses) y la tasa global de recidiva local fue de 2.49 %. El tratamiento quirúrgico post procedimiento y con pieza analizada se indicó en 15 casos por adenomas avanzados con adenocarcinoma intramucoso bien diferenciado (ADCA-IM). A los 12 meses, 13 de 15 recidivas fueron tratadas endoscópicamente y 2 casos refractarios fueron operados. Conclusiones: La mucosectomía (RME ó EMR) es un procedimiento que, realizado por endoscopistas-gastroenterólogos bien entrenados muestra baja tasa de recurrencia y complicaciones aisladas permitiendo la obtención de adecuado material para el estudio anátomo-patológico y reduciendo necesidad de cirugía abierta o laparoscópica.

          Translated abstract

          ABSTRACT Background: Detection and resection of colonic polypoid sessile and flat lesions, prevents the development of colon cancer. Endoscopic mucosal resection (EMR) has emerged in the 70´s and improved in the 80´s, as an alternative treatment of this lesions and is considered the procedure of choice nowadays, being able to avoid major surgical procedures. Objectives: Evaluation of the results and complications of the technique by endoscopists of a reference center. Review of indications and limitations of the technique. Material and methods: Descriptive, retrospective and observational analysis of patients treated with endoscopic mucosal resection technique at a referral center in Lima, Peru, between January 2004 and December 2018. EMR Technique was used in polypoid lesions greater than 1 cm. The bloc resection and the piecemeal resection technique was used for those lesions up to 3 cm and more. We evaluated complications and results according to the technique as recurrence rate, performing tracking in all cases with endoscopic follow up. Results: 756 lesions and patients (338 women and 298 men) The average age was 61.9 years (37-91 years) and the average lesion size of 20.3 mm (10-50 mm). En bloc or one-piece resection was performed in 78.04 %(590) and piece meal in 21.96%(166) achieving endoscopic and pathological resection. The complication rate in our series was 6.74% and managed endoscopically and with conservative measures and no surgery. Mean follow-up was 18 months (3-24 months) and overall local recurrence rate was 2.49%. After-procedure, additional surgical treatment was performed in 15 cases with pathologic piece report and intramucous adenocarcinoma (IM-ADCA). 13 of 15 local recurrences at 12 months follow up were treated endoscopically and 2 had surgical treatment. Conclusions: Endoscopic mucosal resection (EMR) or Mucosectomy is a technique performed by experts endoscopists and shows low rates of recurrence and complications with suitable material for pathologic examination. It reduces open and laparoscopic surgery.

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          Most cited references29

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          Endoscopic submucosal dissection: European Society of Gastrointestinal Endoscopy (ESGE) Guideline.

          This Guideline is an official statement of the European Society of Gastrointestinal Endoscopy (ESGE). The Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system 1 2 was adopted to define the strength of recommendations and the quality of evidence.
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            Colorectal polypectomy and endoscopic mucosal resection (EMR): European Society of Gastrointestinal Endoscopy (ESGE) Clinical Guideline.

            1  ESGE recommends cold snare polypectomy (CSP) as the preferred technique for removal of diminutive polyps (size ≤ 5 mm). This technique has high rates of complete resection, adequate tissue sampling for histology, and low complication rates. (High quality evidence, strong recommendation.)2 ESGE suggests CSP for sessile polyps 6 - 9 mm in size because of its superior safety profile, although evidence comparing efficacy with hot snare polypectomy (HSP) is lacking. (Moderate quality evidence, weak recommendation.)3 ESGE suggests HSP (with or without submucosal injection) for removal of sessile polyps 10 - 19 mm in size. In most cases deep thermal injury is a potential risk and thus submucosal injection prior to HSP should be considered. (Low quality evidence, strong recommendation.)4 ESGE recommends HSP for pedunculated polyps. To prevent bleeding in pedunculated colorectal polyps with head ≥ 20 mm or a stalk ≥ 10 mm in diameter, ESGE recommends pretreatment of the stalk with injection of dilute adrenaline and/or mechanical hemostasis. (Moderate quality evidence, strong recommendation.)5 ESGE recommends that the goals of endoscopic mucosal resection (EMR) are to achieve a completely snare-resected lesion in the safest minimum number of pieces, with adequate margins and without need for adjunctive ablative techniques. (Low quality evidence; strong recommendation.)6 ESGE recommends careful lesion assessment prior to EMR to identify features suggestive of poor outcome. Features associated with incomplete resection or recurrence include lesion size > 40 mm, ileocecal valve location, prior failed attempts at resection, and size, morphology, site, and access (SMSA) level 4. (Moderate quality evidence; strong recommendation.)7 For intraprocedural bleeding, ESGE recommends endoscopic coagulation (snare-tip soft coagulation or coagulating forceps) or mechanical therapy, with or without the combined use of dilute adrenaline injection. (Low quality evidence, strong recommendation.)An algorithm of polypectomy recommendations according to shape and size of polyps is given (Fig. 1).
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              Local recurrence after endoscopic mucosal resection of nonpedunculated colorectal lesions: systematic review and meta-analysis.

              Local recurrence has been observed after endoscopic mucosal resection (EMR) of nonpedunculated colorectal lesions. The indications for follow-up colonoscopy and the optimal time interval are currently unclear. The aims of this systematic review were to assess the frequency of local recurrence after EMR, to identify risk factors for recurrence, and to provide follow-up recommendations.
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                Author and article information

                Journal
                amp
                Acta Médica Peruana
                Acta méd. Peru
                Colegio Médico del Perú (Lima, , Peru )
                1728-5917
                July 2022
                : 39
                : 3
                : 236-245
                Affiliations
                [3] Lima orgnameUniversidad Peruana Cayetano Heredia Peru
                [1] orgnameClínica Ricardo Palma orgdiv1Servicio de Gastroenterología BASAMEA
                [2] orgnameClínica Ricardo Palma orgdiv1Departamento de Anatomía Patológica
                Article
                S1728-59172022000300236 S1728-5917(22)03900300236
                10.35663/amp.2022.393.2404
                01466fd2-3d41-492e-ab9c-20c21edb7ed3

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 29 September 2022
                : 08 June 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 30, Pages: 10
                Product

                SciELO Peru

                Categories
                Artículo original

                Endoscopic Mucosal Resection,Pólipos del Colon,Resección Endoscópica de la Mucosa,Colonic Polyps

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