Evaluation of diagnostic ultrasound as a mass screening technique for the detection of hydatid cysts in the liver and lung of sheep and goats.
Ultrasound examination of the liver and lung followed by post-mortem examination was performed in 16 sheep and 284 goats. Thirty-one (10.3%) were positive for hydatid cysts on ultrasound examination and 46 (15.3%) were positive on post-mortem examination. Twenty-one positive on post-mortem examination were falsely identified as negative on ultrasound examination. Of the 254 animals negative on post-mortem examination, six (2.4%) were falsely identified as positive on ultrasound examination. The sensitivity and specificity of ultrasound examination for detecting hydatid cysts in sheep and goats was 54.36% and 97.64%, respectively (positive predictive value: 80.64%; negative predictive value: 92.19%).
Sage
A M
AM
University of Pennsylvania School of Veterinary Medicine, New Bolton Center, Kennett Square, PA 19348, USA.
Wachira
T M
TM
Zeyhle
E E
EE
Weber
E P
EP
Njoroge
E
E
Smith
G
G
D000003:Abattoirs; D000818:Animals; D004444:Echinococcosis, Hepatic / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control / Q000662:veterinary*; D004445:Echinococcosis, Pulmonary / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control / Q000662:veterinary*; D005069:Evaluation Studies as Topic; D005260:Female; D015511:Goat Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control*; D006041:Goats; D007630:Kenya / Q000453:epidemiology; D008297:Male; D008403:Mass Screening / Q000662:veterinary*; D015995:Prevalence; D012756:Sheep; D012757:Sheep Diseases / Q000000981:diagnostic imaging / Q000453:epidemiology / Q000517:prevention & control*; D014463:Ultrasonography