Paediatric imaging: Wilms tumour: 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.

Try it

Radiology · Paediatric imaging: Wilms tumour

Sample item

A 3-year-old child has a palpable abdominal mass that does not cross the midline. Ultrasound shows a large solid intrarenal mass with the calyces stretched around it (claw sign). What is the likely diagnosis?

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

The answer and the reasoning

C. Wilms tumour

Wilms tumour arises from the kidney and distorts the pelvicalyceal system, with the 'claw sign' showing renal tissue wrapping the mass. It rarely calcifies. Neuroblastoma arises from the adrenal or sympathetic chain, displaces the kidney, crosses the midline and often calcifies.

Option by option

  • A. Hepatoblastoma

    Hepatoblastoma arises in the liver.

  • B. Hydronephrosis

    Hydronephrosis is a cystic dilatation, not a solid mass.

  • C. Wilms tumour (correct)

    Correct. An intrarenal mass with a claw sign suggests Wilms tumour.

  • D. Neuroblastoma

    Neuroblastoma is extrarenal, calcifies and displaces the kidney.

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.

More Radiology questions

Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is C, Wilms tumour. Wilms tumour arises from the kidney and distorts the pelvicalyceal system, with the 'claw sign' showing renal tissue wrapping the mass.

Why is "Hepatoblastoma" not the answer?

Hepatoblastoma arises in the liver.

Why is "Hydronephrosis" not the answer?

Hydronephrosis is a cystic dilatation, not a solid mass.

Why is "Neuroblastoma" not the answer?

Neuroblastoma is extrarenal, calcifies and displaces the kidney.

What concept does this question test?

It tests Paediatric imaging: Wilms tumour in Radiology. It rarely calcifies. Neuroblastoma arises from the adrenal or sympathetic chain, displaces the kidney, crosses the midline and often calcifies.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. 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 Paediatric imaging: Wilms tumour?

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.