To review the spectrum of hydatidosis’ clinical presentation,
focusing on abdominal involvement. To illustrate its most typical imaging features in hepatic,
splenic and peritoneal disease.
Epidemiology Hydatidosis is a worldwide zoonosis caused by the larval stage of Echinococcus tapeworm,
there being four species known to be pathogenic in humans.
The two main types of Echinococcus infections are E.
which is the most common one,
that is more invasive,
mimicking a malignancy. Hydatid Disease (HD) is still endemic in Middle East,
South America and Mediterranean Europe,
[1-4] Life cycle of...
Imaging findings OR Procedure details
Ultrasonography ( US ) is usually the screening method of choice,
particularly useful for detection of cystic membranes,
septa and hydatid sand [6,
17]. Although it may display the majority of the findings of Computed Tomography ( CT ),
with its high sensitivity (94%),
might be indicated in cases in which US fails due to patient-related difficulties and in the presence of disease complications,
as well as to determine the resectability of the lesions when surgery is indicated [6,
As hydatidosis is mostly asymptomatic with negative serologic tests,
its diagnostic approach is essentially based on imaging findings,
the familiarity with the most characteristic patterns being advantageous to any Radiologist,
especially in endemic areas.
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