Accuracy of Multi-Detector Computed Tomography in Detection of Esophageal Varices in Chronic Liver Disease
Background: Patients with chronic liver disease should undergo screening endoscopy, but this approach places a heavy burden upon endoscopy units along with other limitations. The aim of this study was to determine the diagnostic accuracy of multi-detector computed tomography scan in detecting esophageal varices taking endoscopy as gold standard.
Material and Methods: This cross-sectional study was done from 1st Jan 2018 to 31st Dec 2018 at Department of Radiology, PIMS Hospital Islamabad. A total of 180 patients of both gender with chronic liver disease for at least 12 months were included in this study with an age range of 25-65 years. Patients with active gastrointestinal hemorrhage, hypersensitivity to iodinated contrast agent, chronic renal failure, claustrophobic and pregnant females were excluded. All the patients underwent endoscopy and computed tomography of lower chest and the upper abdomen before and after intravenous contrast administration. Multi detector computed tomography (MDCT) scan findings for esophageal varices were compared with endoscopy findings.
Results: In MDCT positive patients (n=102), 98 were true positive and 04 were false positive. Among 78 MDCT negative patients, 07 were false negative, whereas 71 were true negative. Overall sensitivity and specificity were 93.33%, and 94.67% respectively. The positive and negative predictive values were 96.08% and 91.03% respectively, while diagnostic accuracy of MDCT in detecting esophageal varices in chronic liver disease patients was 93.89%, taking endoscopy as gold standard.
Conclusions: Multi-detector computed tomography scan is a highly sensitive and accurate non-invasive modality for detecting esophageal varices in chronic liver disease patients.
Key words: Accuracy, Chronic liver disease, Esophageal varices, Multi-detector computed tomography
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