Is acute appendicitis complicated or uncomplicated? Approaching the question via computed tomography
Mehmet Akçiçek1,2, Mehtap Ilgar2, Serkan Ünlü2
1Faculty of Medicine, Radiology Department, Malatya Turgut Ozal University, Malatya, Turkey.
Background:
The distinction between complicated and uncomplicated appendicitis is very important for the selection of the treatment method.
Purpose:
To investigate the sensitivity and specificity of computed tomography (CT) in differentiating between complicated and uncomplicated appendicitis to demonstrate that false negativity in differentiating these cases can be reduced when CT findings are incorporated into the clinical evaluation of patients.
Material And Methods:
All patients aged ≥18 years who underwent appendectomy at Malatya Training and Research Hospital in 2020 and 2021 were retrospectively screened. Of them, 283 patients were included in the study who had undergone CT before the operation. Patients with appendicitis were divided into two groups: complicated and uncomplicated, according to the results of their pathology tests. Demographic data, laboratory results, and CT images of the patients were evaluated.
Results:
The patients with complicated appendicitis had a significantly higher mean age (P<0.001). The most common CT findings in patients with complicated appendicitis were moderate or severe peri-appendiceal fat stranding (PFS) and appendix wall enhancement defect (AWD). The findings with the highest sensitivity were PFS (77.9%) and AWD (69.4%). Although abscess, phlegmon, and peri-appendiceal air had the highest specificity (100%), these findings were the ones with the lowest sensitivity. According to the scoring system was developed for the differential diagnosis, CT had a sensitivity of 83.3% and a specificity of 79.2%.
Conclusion:
Based on the sensitivity and specificity values measured for CT according to the findings of our study, the scoring system may be useful for the differential diagnosis of complicated appendicitis.
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