hydatid disease

Hydatid disease is a parasitic INFECTION caused by the larval stages of ECHINOCOCCUS tapeworms, especially Echinococcus granulosus and Echinococcus multilocularis. The infection leads to the formation of hydatid CYSTS, most commonly in the LIVER and LUNGS, although other organs including the BRAIN may sometimes be affected. The cysts may enlarge slowly and cause symptoms by compressing nearby tissues. Rupture of a cyst may trigger severe ALLERGIC REACTION, including ANAPHYLAXIS. Infection is commonly associated with contact with infected animals, especially dogs and livestock.

Hydatid disease is an infection caused by a tapeworm parasite. It creates cysts inside organs, especially the liver and lungs.

• Also called echinococcosis • Caused by Echinococcus tapeworm infection • Produces fluid-filled hydatid cysts inside organs • Most commonly affects the liver and lungs • Can occasionally involve the brain and other tissues • Large cysts may damage organs by pressure • Cyst rupture may cause a serious allergic reaction • Often linked to transmission from infected animals such as dogs