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      Prevalencia del resultado de citología de células escamosas atípicas que no excluye lesión intraepitelial de alto grado (ASC-H), en dos instituciones de Bogotá (Colombia), 2006-2013 Translated title: Prevalence of the result of atypical squamous cell citology which does not rule out high grade intraepithelial lesion (ASC-H) in two institutions in Bogotá (Colombia), 2006-2013

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          Abstract

          Objetivo: determinar la prevalencia de citologías cervicovaginales con hallazgo citológico de tipo células escamosas atípicas que no descartan lesión escamosa intraepitelial de alto grado (ASC-H), en dos centros de patología cervical, y determinar en ellas la prevalencia de lesión escamosa intraepitelial de alto grado (LEI-AG) por biopsia. Materiales y métodos: estudio de corte transversal en el cual se incluyen todas las pacientes que se practicaron citologías en dos centros de colposcopia en Bogotá: un hospital público y un centro de colposcopia privado, en el periodo comprendido entre 2006-2013. Se identificaron las citologías ASC-H, se realizó muestreo consecutivo, se evaluaron las características sociodemográficas de las pacientes atendidas, el resultado colposcópico y el resultado de biopsia. En el análisis se presenta la prevalencia del resultado ASC-H y sobre el número de pacientes con resultado de ASC-H se estimó la prevalencia de LEI-AG por histopatología. Resultados: se identificaron 357 citologías ASC-H de 23.960 citologías anormales, calculando una prevalencia del 1,49 % (IC 95 %: 1,34-1,64). Se dispuso de estudio histopatológico en 230 pacientes (65 %), en las pacientes con citología ASC-H la prevalencia de LEI-AG fue de 26,5 %. Conclusiones: los resultados de este estudio mostraron una prevalencia de ASC-H del 1,49 %. Dado que un importante número de pacientes tienen lesión intraepitelial de alto grado, se recomienda la realización de biopsia dirigida por colposcopia en pacientes con estos resultados.

          Translated abstract

          Objective: To determine the prevalence of the finding of atypical squamous cells cannot exclude high-grade squamous intraepithelial lesions (ASC-H) in two pathology centres, and to determine the prevalence among those cytology findings of high grade squamous intraepithelial lesion (HSIL) on biopsy. Materials and methods: Cross-sectional study including all patients undergoing cytology in two colposcopy centres in Bogotá, one in a public hospital and the other in a private centre, during the period between 2006 and 2013. ASC-H cytology results were identified in a sample of consecutive cases, and the assessment included the social and demographic characteristics of the patients and the colposcopy and biopsy results. The analysis focuses on the prevalence of the ASC-H result and of the HSIL result on histopathology. Results: Overall, 357 ASC-H cytology results were identified out of 23,960 abnormal cytology findings, leading to an estimated prevalence of 1.49% (95% CI, 1.34-1.64). Histopathology was required in 230 cases (65%) and the prevalence among them of HSIL was 26.5%. Conclusions: The results of this study showed a prevalence of 1.49% for ASC-H. Given that an important number of patients have a high-grade intraepithelial lesion, colposcopy-guided biopsy is recommended in patients with this result.

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          Most cited references16

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          Cancer facts & figures 2015

          (2015)
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            Liquid-based cytology: evaluation of effectiveness, cost-effectiveness, and application to present practice.

            This article reviews the data available as of 2004 on the effectiveness and cost-effectiveness of cervical screening with the two available cytologic methods, the conventional Papanicolaou (Pap; CP) smear and liquid-based cytology (LBC), and discusses the application of LBC to current practice. The majority of LBC studies are on the ThinPrep Pap Test (CYTYC, Boxsborough, MA) and the remainder are on SurePath (TriPath, Burlington, NC), which was previously known as AutoCyte Prep. LBC identified more low-grade squamous intraepithelial lesion (LSIL) Pap test results compared with paired conventional cytology in 17 of 21 ThinPrep and 9 of 12 SurePath "split-sample" studies considered to fulfill the criteria for inclusion in the British NHS Health Technology Assessment (HTA) evaluation of cervical cytology. In four of the six recent ThinPrep and one of two SurePath split-sample studies, more high-grade squamous intraepithelial lesion-positive (HSIL+) results were identified by LBC than by CP. All 15 "direct-to vial studies" meeting HTA criteria reported more LSIL+ results for LBC compared with CP, and all eight of the direct-to-vial studies reporting HSIL+ results separately showed increased detection of high-grade cytology interpretations. Fifteen studies met the criteria for evaluating sensitivity and specificity. Aggregate sensitivity for the CP was 71.5% and for LBC was 80.1%. Indirect comparisons of the two LBC methods did not detect a difference in sensitivity, and a meta-analysis of the six studies comparing specificity between CP and LBC found no difference. Other capabilities of LBC are improved specimen adequacy and the ability to do ancillary testing out of the liquid-based vial. In cost-effective analyses based on models of disease natural history and/or the clinical effectiveness of each screening modality, screening with CP was always dominated by screening with LBC. Primary cervical screening guidelines issued by the American Cancer Society in 2002 recommend repeating the cytology biannually if liquid-based and annually if conventional. The gain in sensitivity, apparent cost-effectiveness, and advantage of having a representative specimen for ancillary testing, support the use of LBC.
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              Atypical Squamous Cells of Undetermined Significance: Bethesda Classification and Association with Human Papillomavirus

              Introduction. To analyze patients with atypical squamous cells of undetermined significance (ASCUS) through a cytology review and the presence of microbiological agents, with consideration of colposcopy and semiannual tracking. Methods. 103 women with ASCUS were reviewed and reclassified: normal/inflammatory, ASCUS, low-grade squamous intraepithelial lesion (LSIL), or high-grade squamous intraepithelial lesion (HSIL). If ASCUS confirmed, it was subclassified in reactive or neoplastic ASCUS, ASC-US, or ASC-H; and Regione Emilia Romagna Screening Protocol. Patients underwent a colposcopic examination, and test for Candida sp., bacterial vaginosis, Trichomonas vaginalis, and human papillomavirus (HPV) were performed. Results. Upon review, ASCUS was diagnosis in 70/103 (67.9%), being 38 (54.2%) reactive ASCUS and 32 (45.71%) neoplastic ASCUS; 62 (88.5%) ASC-US and 8 (11.41%) ASC-H. ASCUS (Regione Protocol), respectively 1-5: 15 (21.4%), 19 (27.1%), 3 (27.1%), 16 (22.8%), and 1 (1.4%). A higher number of cases of cervical intraepithelial neoplasia (CIN) II/III in the biopsies of patients with ASC-H compared to ASC-US (P = .0021). High-risk HPV test and presence of CIN II/III are more frequent in ASC-H than ASC-US (P = .031). Conclusions. ASC-H is associated with clinically significant disease. High-risk HPV-positive status in the triage for colposcopy of patients with ASC-US is associated with increased of CIN.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Journal
                rcog
                Revista Colombiana de Obstetricia y Ginecología
                Rev Colomb Obstet Ginecol
                Federación Colombiana de Obstetricia y Ginecología (Bogotá )
                0034-7434
                March 2015
                : 66
                : 1
                : 32-36
                Affiliations
                [1 ] Universidad de La Sabana Colombia
                [2 ] Universidad de La Sabana Colombia
                Article
                S0034-74342015000100004
                06c50f3e-1b7b-4354-be1e-917dfdb0a309

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Colombia

                Self URI (journal page): http://www.scielo.org.co/scielo.php?script=sci_serial&pid=0034-7434&lng=en
                Categories
                OBSTETRICS & GYNECOLOGY

                Obstetrics & Gynecology
                Cervical dysplasia,cervical intraepithelial neoplasia,cytology,colposcopy,displasia del cuello del útero,neoplasia intraepitelial del cuello uterino,citología,colposcopia

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