Ultrasound images Hydatid (echinococcal) cyst

Hydatid disease comes from a parasite, Echinococcus granulosus, which is endemic in the Middle East but rare in the UK. The worm lives in the alimentary tract of infected dogs, which excrete the eggs. These may then be ingested by cattle or sheep and subsequently complete their life cycle in a human. The parasite spreads via the bloodstream to the liver, where it lodges, causing an inflammatory reaction. The resulting cyst can be slow-growing Ultrasound images Multiple cysts in the liver. In this case the kidneys are normal. Polycystic liver is more usuallyassociated with polycystic kidney disease.
and asymptomatic and may be single or multiple, depending on the degree of infestation.Although the appearances are often similar to those of a simple cyst, the diagnosis can be made by looking carefully at the wall and contents; thehydatid cyst has two layers to its capsule, which may appear thickened, separated or detached on ultrasound.Daughter cysts may arise from the inner capsule—the honeycomb or cartwheel appearance (Fig.4.6). Thirdly, a calcified rind around a cyst is usually associated with an old, inactive hydatid lesion.The diagnosis of hydatid, as opposed to a simple cyst, is an important one as any attempted aspiration may spread the parasite further by seeding along the needle track if the operator is unaware of the diagnosis.
Management of hepatic hydatid cysts has traditionally been surgical resection. However, considerable success has now been achieved using percutaneous ultrasound-guided aspiration with sclerotherapy.
LiveJournal Tags: ultrasound images asymptomatic,ultrasound images of Multiple cysts in the liver,ultrasound images Echinococcus granulosus.
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