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Kachoie A, madani S, VAHEDIAN M, amirkanian F, Noori E, shater M et al . Determination of the Ultrasound Sensitivity and Specificity in the Diagnosis of Acute Cholecystitis. Zanko J Med Sci 2020; 20 (67) :87-93
URL: http://zanko.muk.ac.ir/article-1-469-en.html

Backgroud and Aim: Acute cholecystitis is one of the most common surgical problems amongst the patients with abdominal pain. The purpose of this study was to determine the ultrasound (US) sensitivity and specificity in the diagnosis of acute cholecystitis according to the surgical and pathological findings at Shahid Beheshti Hospital (Qom, Iran) between 2016 and 2017.
Material and Method: The statistical population of this cross-sectional study included all patients with acute cholecystectomy referred to Shahid Beheshti Hospital whom underwent cholecystectomy between 2016 and 2017. In this study, census sampling was done. Based on the including and excluding criteria of the study, age, sex, sonography result, pathological examination, presence of gallstones, cholecystectomy, emergency and elective surgery were extracted from the files and entered the checklist. Sensitivity, specificity and predictive value of US were calculated by using sensory software 18.9 MEDcal for acute cholecystitis. And 95% confidence interval for diagnostic indices was reported.
Results: 31 patients (31%) were male and 69 (69%) were female. And the mean age of these patients was 53.62 ± 12.27. 89 cases (89%) had gallstones. Pathologic findings were positive in 56 (56%) patients and 44 (44%) had negative pathological findings. Furthermore, the sensitivity and specificity of US were estimated to be 82.1% and 90.1%, respectively. The positive and negative predictive values of ultrasonography were (92%) and (80%) respectively, in the diagnosis of acute cholecystitis. Additionally, the diagnostic accuracy of ultrasonography was 86% in diagnosis of acute cholecystitis.
Conclusion: According to the findings of this study, it can be concluded that ultrasound has a high diagnostic accuracy in diagnosis of acute cholecystitis in patients.