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Morphologic criteria of vermiform appendix on computed tomography and a possible risk of developing acute appendicitis
Journal article   Open access   Peer reviewed

Morphologic criteria of vermiform appendix on computed tomography and a possible risk of developing acute appendicitis

Amanda Chambi Tames, Fernando Ide Yamauchi, Adham do Amaral e Castro, Caroline Duarte De Mello Amoedo, Ellison Fernando Cardoso, Ronaldo Hueb Baroni and Adriano Tachibana
Radiologia brasileira, Vol.52(4), pp.217-221
07/01/2019
DOI: 10.1590/0100-3984.2018.0118
PMID: 31435081
url
https://doi.org/10.1590/0100-3984.2018.0118View
Published (Version of record) Open Access

Abstract

Objective: To evaluate the correlation of morphological criteria of the cecal appendix using computed tomography (CT) and the possible risk of developing acute appendicitis. Materials and Methods: Cases were defined as patients with surgically confirmed acute appendicitis who had undergone CT at least twice: at diagnosis and at least one month prior. Controls were defined as emergency patients with abdominal pain who had undergone abdominal CT that excluded acute appendicitis and had also undergone CT at least one month before. Results: 100 cases and 100 controls were selected for inclusion in the final analysis. Comparisons between the cases and controls revealed the following: mean transverse diameter of 0.6 cm (range, 0.4-1.0 cm) versus 0.6 cm (range, 0.6-0.8 cm; p = 0.37); mean length of 6.6 cm (range, 3.5-9.7 cm) versus 6.6 cm (range, 4.5-8.3 cm; p = 0.87); mean angle of 100° (range, 23-178°) versus 86° (range, 43-160°; p = 0.01); vertical descending orientation in 56% versus 45% (p = 0.2); absence of gas in 69% versus 77% (p = 0.34); and presence of an appendicolith in 17% versus 8% (p = 0.08). Conclusion: Hypothetical risk factors for obstruction of the vermiform appendix detected on CT were not associated with acute appendicitis. That suggests that factors other than those related to mechanical obstruction are implicated in the pathogenesis of acute appendicitis.
Appendicitis Appendix Emergency medicine Multidetector computed tomography

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