IMAGING ASSESSMENT OF GASTRODUODENAL PERFORATION ON THE COMPUTED TOMOGRAPHY
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Abstract
Background: Computed tomography has been increasingly used in the investigation of patients with suspected gastroduodenal perforation. Recently, more new findings, which are effective in diagnostising perforation, have bee described. Objectives: To investigate the imaging features of gastroduodenal perforation on CT-scan. Materials and methods: This retrospective study included 34 patients who had intraoperative diagnosis of gastroduodenal perforations at Hoan My Sai Gon Hospital, from October 2019 to September 2021. All of their abdominal CT-scan with intravenous contrast injection and plain upright films within 12 hours before surgery were reviewed. Results: The mean age of patients was 52.2±21.5 years with the youngest and oldest age being 16 and 88 years. The causes of perforation were peptic ulcer (94.1%), gastric tumor (2.9%), gastrointestinal foreign bodies (2.9%). On CT-scan, the four most common signs of gastroduodenal perforations with decreasing frequency were: (1) Wall defect (97.1%), (2) Free air in the abdomen (97.1%), (3) Thickening of the gastroduodenal wall adjacent to the perforation (88.2%), (4) Intraabdominal free fluid (73.5%). The specific sites of free air in gastroduodenal perforation in decreasing frequency were: (1) Around the liver (79.4%), (2) The liver hilum (73.5%), (3) Adjacent to the falciform ligament (64.7%), (4) Adjacent to perforation (64.7%). Conclusions: The important signs of gastroduodenal perforation on CT-scan with decreasing frequency are: (1) Loss of normal gastroduodenal mucosal integrity, (2) Free air in the abdomen, (3) Thickening of the gastroduodenal wall adjacent to the perforation, and (4) Free fluid in the abdomen.
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Keywords
Gastroduodenal perforation, computed tomography
References
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