High-Resolution Ultrasonography (US) of Appendiceal Specimens: Differentiation of Acute Non-perforated Appendicitis from Perforated Appendicitis.
- Author:
Gyo Chang CHOI
1
;
Suk KIM
;
Han Hyeok IM
;
Sang Jin LEE
;
Seung Boo YANG
;
Seung Woo LEE
;
Hae Kyung LEE
;
Kui Hyang KWON
;
Hyung Chul SHIN
;
Il Young KIM
Author Information
1. Department of Radiology, Soonchunhyang University Gumi Hospital, Korea. cgc3@hanafos.com
- Publication Type:Original Article
- Keywords:
Appendicitis;
Appendix;
Appendix, US;
Ultrasound(US)
- MeSH:
Appendicitis*;
Appendix;
Humans;
Sensitivity and Specificity;
Ultrasonography*
- From:Journal of the Korean Society of Medical Ultrasound
2007;26(3):145-153
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To analyze surgical specimens from patients with acute non-perforated and perforated appendicitis using high-resolution ultrasonography (US), and to correlate the US features with the pathologic findings. MATERIALS and METHODS: One hundred and six surgical appendix specimens obtained from patients with suspected acute appendicitis were evaluated. The following US features were evaluated for differentiating acute non-perforated appendicitis from perforated appendicitis: circumferential loss of the echogenic submucosal layer, disruption of the serosal layer, asymmetrical wall thickening, the sum of opposing walls > or = 9 mm and the presence of appendicoliths. The sensitivity and specificity of the US findings for diagnosing perforated appendicitis were determined. RESULTS: All US features were detected significantly more often in the perforated appendicitis group of specimens. The disruption of the serosal layer was the most significant independent predictor of perforation (p < .001). The sensitivity for circumferential loss of the echogenic submucosal layer, disruption of the serosal layer, asymmetrical wall thickening, wall thickness > or = 9 mm, and the presence of appendicoliths individually was 84.6%, 69.2%, 61.5%, 73.1% and 46.2%, respectively. The specificity for all of these findings was 86.3%, 98.7%, 95.0%, 85.0% and 85.0%, respectively. CONCLUSION: High-resolution US of appendiceal specimens was very useful for differentiating acute non-perforated from perforated appendicitis.
