Correlation of gastrointestinal perforation location and amount of free air and ascites on CT imaging.
Abdominal CT imaging
CT volumetry
Gastrointestinal perforation
Volumetry of air
Volumetry of ascites
Journal
Abdominal radiology (New York)
ISSN: 2366-0058
Titre abrégé: Abdom Radiol (NY)
Pays: United States
ID NLM: 101674571
Informations de publication
Date de publication:
10 2021
10 2021
Historique:
received:
05
03
2021
accepted:
19
05
2021
revised:
05
05
2021
pubmed:
12
6
2021
medline:
21
9
2021
entrez:
11
6
2021
Statut:
ppublish
Résumé
To analyze the amount of free abdominal gas and ascites on computed tomography (CT) images relative to the location of a perforation. We retrospectively included 172 consecutive patients (93:79 = m:f) with GIT perforation, who underwent abdominal surgery (ground truth for perforation location). The volume of free air and ascites were quantified on CT images by 4 radiologists and a semiautomated software. The relation of the perforation location (upper/lower GIT) and amount of free air and ascites was analyzed by the Mann-Whitney test. Furthermore, best volume cutoff for upper and lower GIT perforation, areas under the curve (AUC), and interreader volume agreement were assessed. There was significantly more abdominal ascites with upper GIT perforation (333 ml, range 5 to 2000 ml) than with lower GIT perforation (100 ml, range 5 to 2000 ml, p = 0.022). The highest volume of free air was found with perforations of the stomach, descending colon and sigmoid colon. Significantly less free air was found with perforations of the small bowel and ascending colon compared to the aforementioned. An ascites volume > 333 ml was associated with an upper GIT perforation demonstrating an AUC of 0.63 ± 0.04. Using a two-step process based on the volumes of free air and free fluid can help localizing the site of perforation to the upper, middle or lower GI tract.
Identifiants
pubmed: 34114087
doi: 10.1007/s00261-021-03128-2
pii: 10.1007/s00261-021-03128-2
pmc: PMC8435523
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
4536-4547Informations de copyright
© 2021. The Author(s).
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