Patterns of resolution in successfully treated hepatic amebic abscess: sonographic evaluation.

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Abstract
Gray-scale sonography provides a means of following cases of successfully treated hepatic amebic abscess, allowing new insights into the natural history of this entity. The majority of cases (23 of 32) resolved over a variable time period (1.5-23 mo., median 7 mo.) to a normal sonographic hepatic parenchymal pattern. It is important that the transient, persistent abnormality seen after successful treatment not prompt reinstitution of therapy or further diagnostic testing in these patients. A smaller subgroup (6 of 32) had sonographically persistent residua that appeared identical to benign simple cysts of the liver. The remaining 3 lesions showed slightly increased or decreased hepatic echogenicity after treatment.

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