Hydatid cysts in the liver classically show which feature?

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Multiple Choice

Hydatid cysts in the liver classically show which feature?

Hydatid cysts in the liver have a distinctive multiloculated structure produced by the parasite. The germinal layer inside the main cyst forms brood capsules that develop into daughter cysts, so the classic imaging appearance is a cyst containing multiple smaller cysts within it—a “cyst within a cyst.” This presence of daughter cysts within the main cyst is the hallmark feature and is what radiologists look for on ultrasound or CT. Calcified walls can be seen, especially in older, inactive cysts, but they’re not the defining feature. Internal septations may be present in some hydatid cysts, yet without daughter cysts, this appearance is less specific. Solid nodules point away from a simple hydatid lesion and suggest other hepatic processes.

Hydatid cysts in the liver have a distinctive multiloculated structure produced by the parasite. The germinal layer inside the main cyst forms brood capsules that develop into daughter cysts, so the classic imaging appearance is a cyst containing multiple smaller cysts within it—a “cyst within a cyst.” This presence of daughter cysts within the main cyst is the hallmark feature and is what radiologists look for on ultrasound or CT.

Calcified walls can be seen, especially in older, inactive cysts, but they’re not the defining feature. Internal septations may be present in some hydatid cysts, yet without daughter cysts, this appearance is less specific. Solid nodules point away from a simple hydatid lesion and suggest other hepatic processes.

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