The normal appendix on CT: does size matter?

<h4>Purpose</h4>(1) To evaluate the frequency of visualisation and measurements of the normal appendix. (2) To correlate Body Mass Index (BMI) and gender with visualisation of the normal appendix. (3) To correlate age, gender and body length with appendiceal length.<h4>Materials an...

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Autores principales:	Inneke Willekens, Els Peeters, Michel De Maeseneer, Johan de Mey
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c64f0eab14874e428176eff8aa5d0148
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spelling	oai:doaj.org-article:c64f0eab14874e428176eff8aa5d01482021-11-18T08:20:28ZThe normal appendix on CT: does size matter?1932-620310.1371/journal.pone.0096476https://doaj.org/article/c64f0eab14874e428176eff8aa5d01482014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24802879/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Purpose</h4>(1) To evaluate the frequency of visualisation and measurements of the normal appendix. (2) To correlate Body Mass Index (BMI) and gender with visualisation of the normal appendix. (3) To correlate age, gender and body length with appendiceal length.<h4>Materials and methods</h4>A retrospective review of 186 patients undergoing abdominal CT without suspicion of acute appendicitis was done. Frequency of visualisation and measurements (including maximal outer diameter, wall thickness, length, content, location of base and tip) of normal appendices were recorded.<h4>Results</h4>Prevalence of appendectomy was 34.4%. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of visualisation of the normal appendix were 76%, 94%, 96%, 67%, and 82% respectively. The mean maximal diameter of the appendix was 8.19 mm±1.6 (SD) (range, 4.2-12.8 mm). The mean length of the appendix was 81.11 mm±28.44 (SD) (range, 7.2-158.8 mm). The mean wall thickness of the appendix was 2.22 mm±0.56 (SD) (range, 1.15-3.85 mm). The most common location of the appendiceal tip was pelvic in 66% appendices. The most common location of the appendiceal base was inferior, medial, and posterior in 37%. The normal appendix contained high-density material in 2.2%. There was a significant correlation between gender and appendiceal length, with men having longer appendices than women.<h4>Conclusion</h4>Most normal appendices are seen at multislice CT using i.v. contrast. The maximal outer diameter of the normal appendix overlaps with values currently used to diagnose appendicitis on CT.Inneke WillekensEls PeetersMichel De MaeseneerJohan de MeyPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 5, p e96476 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Inneke Willekens Els Peeters Michel De Maeseneer Johan de Mey The normal appendix on CT: does size matter?
description	<h4>Purpose</h4>(1) To evaluate the frequency of visualisation and measurements of the normal appendix. (2) To correlate Body Mass Index (BMI) and gender with visualisation of the normal appendix. (3) To correlate age, gender and body length with appendiceal length.<h4>Materials and methods</h4>A retrospective review of 186 patients undergoing abdominal CT without suspicion of acute appendicitis was done. Frequency of visualisation and measurements (including maximal outer diameter, wall thickness, length, content, location of base and tip) of normal appendices were recorded.<h4>Results</h4>Prevalence of appendectomy was 34.4%. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of visualisation of the normal appendix were 76%, 94%, 96%, 67%, and 82% respectively. The mean maximal diameter of the appendix was 8.19 mm±1.6 (SD) (range, 4.2-12.8 mm). The mean length of the appendix was 81.11 mm±28.44 (SD) (range, 7.2-158.8 mm). The mean wall thickness of the appendix was 2.22 mm±0.56 (SD) (range, 1.15-3.85 mm). The most common location of the appendiceal tip was pelvic in 66% appendices. The most common location of the appendiceal base was inferior, medial, and posterior in 37%. The normal appendix contained high-density material in 2.2%. There was a significant correlation between gender and appendiceal length, with men having longer appendices than women.<h4>Conclusion</h4>Most normal appendices are seen at multislice CT using i.v. contrast. The maximal outer diameter of the normal appendix overlaps with values currently used to diagnose appendicitis on CT.
format	article
author	Inneke Willekens Els Peeters Michel De Maeseneer Johan de Mey
author_facet	Inneke Willekens Els Peeters Michel De Maeseneer Johan de Mey
author_sort	Inneke Willekens
title	The normal appendix on CT: does size matter?
title_short	The normal appendix on CT: does size matter?
title_full	The normal appendix on CT: does size matter?
title_fullStr	The normal appendix on CT: does size matter?
title_full_unstemmed	The normal appendix on CT: does size matter?
title_sort	normal appendix on ct: does size matter?
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/c64f0eab14874e428176eff8aa5d0148
work_keys_str_mv	AT innekewillekens thenormalappendixonctdoessizematter AT elspeeters thenormalappendixonctdoessizematter AT micheldemaeseneer thenormalappendixonctdoessizematter AT johandemey thenormalappendixonctdoessizematter AT innekewillekens normalappendixonctdoessizematter AT elspeeters normalappendixonctdoessizematter AT micheldemaeseneer normalappendixonctdoessizematter AT johandemey normalappendixonctdoessizematter
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The normal appendix on CT: does size matter?

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