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      Congenital abnormalities and anatomical variations of the vermiform appendix and mesoappendix Translated title: Anomalias congênitas e variações anatômicas do apêndice vermiforme e mesoapêndice

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          Abstract

          ABSTRACT Aim: The purpose of this review was to present and discuss the anatomical variations and congenital abnormalities of the vermiform appendix and mesoappendix reported in recent years, and their associations with acute appendicitis and other associated pathologies. Methods: The search was carried out in the following databases: PubMed, Science Direct, and SciELO. Results: Thirty-seven studies were included in this review. Among the abnormalities of the vermiform appendix identified are agenesis and duplicity, and anatomical variations were related to length and positioning. Appendicular duplicity was a more frequent abnormality, mainly Type B2, associated with acute appendicitis, followed by agenesis, Type III. The first case of agenesis associated with acute appendicitis and volvulus-type duplicity of the appendix was identified. The most frequent position was retrocecal in adults and pelvic in children. In the mesoappendix, anatomical variations in its positioning, shape, absence, and length were identified. Conclusion: This review sought to present and discuss the anatomical variations and congenital abnormalities of the vermiform appendix and mesoappendix reported in recent years, and their associations with acute appendicitis and other associated pathologies, contributing to aid in clinical diagnosis and surgical interventions in patients with suspected acute appendicitis.

          Translated abstract

          RESUMO Objetivo: O objetivo desta revisão foi apresentar e discutir as variações anatômicas e anomalias congênitas do apêndice vermiforme e mesoapêndice relatados nos últimos anos e suas associações com apendicite aguda e outras patologias associadas. Métodos: A busca foi realizada nas seguintes bases de dados: Pubmed, Science Direct e Scielo. Resultados: Trinta e sete estudos foram incluídos nesta revisão. Entre as anormalidades do apêndice vermiforme identificada estão agenesia e duplicidade e, variações anatômicas relacionadas ao comprimento e posicionamento. A duplicidade apendicular foi a anormalidade mais incidente, principalmente do Tipo B2, associada à apendicite aguda, seguida de agenesia do Tipo III. O primeiro caso de agenesia associada à apendicite aguda e à duplicidade de apêndice do tipo vólvulo foi identificado. A posição mais frequente foi a retrocecal em adultos e a pélvica em crianças. No mesoapêndice, foram identificadas variações anatômicas em seu posicionamento, formato, ausência e comprimento. Conclusão: Esta revisão procurou apresentar e discutir as variações anatômicas e anomalias congênitas do apêndice vermiforme e mesoapêndice relatados nos últimos anos e suas associações com apendicite aguda e outras patologias associadas contribuindo para o auxílio no diagnóstico clínico e intervenções cirúrgicas em pacientes com suspeita apendicite aguda.

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          Most cited references50

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          A study of 50,000 specimens of the human vermiform appendix.

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            The position of the vermiform appendix at laparoscopy.

            The vermiform appendix has no constant position and the data on the variations in its position are limited. The aim of this study was to determine the frequency of the various positions of the appendix at laparoscopy.
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              Duplicated vermiform appendix.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                jcol
                Journal of Coloproctology (Rio de Janeiro)
                J. Coloproctol. (Rio J.)
                Sociedade Brasileira de Coloproctologia (Rio de Janeiro, RJ, Brazil )
                2237-9363
                2317-6423
                September 2019
                : 39
                : 3
                : 279-287
                Affiliations
                [3] São Gonçalo Rio de Janeiro orgnameUniversidade Salgado de Oliveira Brazil
                [4] Niterói Rio de Janeiro orgnameUniversidade Federal Fluminense Brazil
                [2] Niterói Rio de Janeiro orgnameUniversidade Salgado de Oliveira orgdiv1Departamento de Nutrição Brazil
                [1] Niterói Rio de Janeiro orgnameUniversidade Federal Fluminense orgdiv1Departamento de Educação Física Brazil
                Article
                S2237-93632019000300279
                10.1016/j.jcol.2019.04.003
                66f6dbf3-81fe-4a7f-ac51-6a2507c4f179

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

                History
                : 11 December 2018
                : 21 April 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 50, Pages: 9
                Product

                SciELO Brazil

                Categories
                Review Articles

                Apêndice vermiforme,Variação anatômica,Anomalias congênitas,Vermiform appendix,Anatomical variation,Congenital abnormalities

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