The purpose of this educational exhibit is to: To discuss etiopathogenesis and common organs infested by Echinococcosis. To demonstrate various imaging appearances of hydatid disease in different parts of the body using CT and MRI as imaging modalities.

Hydatid disease is a parasitic infection, tapeworm is causative factor, genus Echinococcus. The larval cestode of the phylum Platyhelminthes causes echinococcosis. Caused by 4 species of Echinococcus, 3 of these are of importance, they are Echinococcus granulosis, causing cystic echinococcosis, most common type; Echinococcus multilocularis, causing alveolar echinococcosis, rare but is very virulent; Echinococcus vogeli, rarest. It is endemic in many parts of world, in tropical countries. The...

Radiological classification of hydatid cyst: Sites of involvement (5) Liver : Liver is the most commonly affected organ (68 to 75% of cases), with the right lobe being the most frequently involved portion. Imaging findings in hepatic HD depend on the stage of cyst growth Complications such as rup­ture into the biliary tree or transdiaphragmatic migration to involve the thoracic cavity can occur. LUNG: Pulmonary lesions can be primary or secondary to intrathoracic rupture of a hepatic hydatid...

Hydatid disease is a dynamic entity with varying imaging appearances.It can arise in any part of the body. Familiarity with imaging findings, especially in endemic countries, provides important advantages in making the diagnosis. Despite the characteristic imaging findings, hydatid disease in unusual anatomic locations may make diagnosis difficult. Hence, hydatid cyst should be kept in mind when a cystic lesion is encountered anywhere in the body. Hydatid disease should be identified...

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