"Staging / Classification "
"T1: mixed low signal (depending on the amount of proteinaceous cellular debris)"
"T2: mixed high signal (depending on the amount of proteinaceous cellular debris), septa and daughter cysts are well visualised (especially on single-shot T2 sequences)"
"T1 C+ (Gd): enhancing walls and septa"
"Hepatic hydatid disease is a parasitic zoonosis caused by the Echinococcus tapeworm. In the liver, two species are most commonly recognised as causing disease in humans:"
"Echinococcus granulosus"
"Echinococcus multilocularis"
"For a general discussion, and links to other system-specific manifestations, please refer to the article on hydatid disease. For a more specific discussion related to the invasive pattern attributed to the E. multilocularis infection, please refer to the article on alveolar echinococcosis."
"The parasite E. granulosus has a worldwide distribution with the highest rates of infection seen in the Mediterranean and Middle Eastern regions, North Africa and South America. The liver is the most commonly affected organ. It typically forms a spherical, fibrous-rimmed cyst with little, if any, surrounding host reaction. Classically it has a large parent cyst within which numerous peripheral daughter cysts are present. Satellite daughter cysts (outside the parent cyst) are seen frequently (~16% cases).There are two forms of E. granulosus:"
"The definitive hosts (adult parasite stage) of E. multilocularis are foxes, dogs and other canids with humans serving as the accidental intermediate host. It is widely distributed throughout the Northern hemisphere."
"This article will discuss the most common presentation of the hepatic hydatid disease, characterised by well-defined encapsulated cystic or multicystic masses related to E. granulosus. For a specific discussion on the less common invasive form, caused by E. multilocularis, please refer to the article on alveolar echinococcosis."
"Echinococcus granulosus"
"Echinococcus multilocularis"
"Staging / Classification"
Expected headings
"Staging / Classification "
"Complications"
"pastoral: the most common form; the domestic dog is the main host"
"The definitive hosts (adult parasite stage) of E. multilocularis are foxes, dogs and other canids with humans serving as the accidental intermediate host. It is widely distributed throughout the Northern hemisphere."