Determination of sensitivity and specificity of ultrasonography in diagnosis of hydatid cysts in the liver and right lung of sheep and goa
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Ultrasound examination of the liver and right lung followed by postmortem examination was performed in 300 animals (16 sheep and 284 goats). Thirty one (10.3%) were positive for hydatid cysts on ultrasound examination and 46 (15.3%) were positive on postmortem examination. Twenty-one hydatid positives on postmortem examination were falsely identified as negatives on ultrasound examination. Of the 254 animals negative on postmortem examination 6 (2.4%) were falsely identified as positive on ultrasound examination. The Sensitivity and specificity of ultrasound examination in detection of hydatid cysts in sheep and goats was 54.36% and 97.645 respectively. The positive predictive value was 80.64% while the negative predictive value was 92.19%.