Hydatid disease of the liver: evaluation of ultrasound and computed tomography

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Abstract
We have evaluated computed tomography (CT) and ultrasonography (US) in 41 patients with hepatic hydatid disease. CT was diagnostic in all patients, while US performed on 36 patients was diagnostic in 34. In the remaining two cases, heavy calcification in one and a large amount of intracavitary air in the other prevented accurate diagnosis. The US findings in the liver regarding cyst form (multilocular or unilocular), size and location were comparable to those of CT. CT detected associated extrahepatic cysts in the abdomen and pelvis in 11 patients while US performed on the same group of patients detected such cysts in seven patients. It is suggested that the entire abdomen and pelvis should be scanned in patients suspected of hydatid disease and when a hepatic lesion is suggestive of the disease.

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