Liver imaging: hydatid cyst: practice question

A Radiology question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Radiology · Liver imaging: hydatid cyst

Sample item

An ultrasound of the liver shows a cystic lesion with multiple daughter cysts and a detached laminated membrane floating inside. What does this feature indicate?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

D. Hydatid cyst (Echinococcus granulosus) with water-lily sign

Detached endocyst floating in fluid (water-lily sign) and daughter cysts (cyst within cyst, honeycomb) are specific for hydatid disease. Gharbi classification grades the ultrasound stages. PAIR or surgery is combined with albendazole.

Option by option

  • A. Simple cyst

    A simple cyst is anechoic with a thin wall and no internal structures.

  • B. Polycystic liver disease

    Polycystic liver disease shows multiple separate simple cysts.

  • C. Pyogenic abscess

    An abscess has thick debris-filled walls without membranes.

  • D. Hydatid cyst (Echinococcus granulosus) with water-lily sign (correct)

    Correct. Daughter cysts and a floating membrane indicate hydatid disease.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is D, Hydatid cyst (Echinococcus granulosus) with water-lily sign. Detached endocyst floating in fluid (water-lily sign) and daughter cysts (cyst within cyst, honeycomb) are specific for hydatid disease.

Why is "Simple cyst" not the answer?

A simple cyst is anechoic with a thin wall and no internal structures.

Why is "Polycystic liver disease" not the answer?

Polycystic liver disease shows multiple separate simple cysts.

Why is "Pyogenic abscess" not the answer?

An abscess has thick debris-filled walls without membranes.

What concept does this question test?

It tests Liver imaging: hydatid cyst in Radiology. Gharbi classification grades the ultrasound stages. PAIR or surgery is combined with albendazole.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Liver imaging: hydatid cyst?

Learn signs with the image, and the disease they point to. Then use the flashcards and the other Radiology questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.