Paediatric imaging: Peutz-Jeghers polyps: 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 · Paediatric imaging: Peutz-Jeghers polyps

Sample item

A 7-year-old with pigmented macules on the lips has colicky abdominal pain. Ultrasound shows a target sign in the small bowel. What is the likely lead point?

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

The answer and the reasoning

B. A hamartomatous polyp of Peutz-Jeghers syndrome

Peutz-Jeghers syndrome causes mucocutaneous pigmentation and hamartomatous small bowel polyps that act as lead points for intussusception. Surveillance uses MR enterography or capsule endoscopy. Idiopathic intussusception in infants is usually due to lymphoid hyperplasia.

Option by option

  • A. Meckel diverticulum with ectopic mucosa

    Meckel diverticulum does not cause lip pigmentation.

  • B. A hamartomatous polyp of Peutz-Jeghers syndrome (correct)

    Correct. Pigmented lips with intussusception suggest a Peutz-Jeghers polyp.

  • C. Appendiceal mucocele

    An appendiceal mucocele is not associated with pigmentation.

  • D. Lymphoid hyperplasia after a viral illness

    Lymphoid hyperplasia occurs mostly in infants without the skin signs.

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 B, A hamartomatous polyp of Peutz-Jeghers syndrome. Peutz-Jeghers syndrome causes mucocutaneous pigmentation and hamartomatous small bowel polyps that act as lead points for intussusception.

Why is "Meckel diverticulum with ectopic mucosa" not the answer?

Meckel diverticulum does not cause lip pigmentation.

Why is "Appendiceal mucocele" not the answer?

An appendiceal mucocele is not associated with pigmentation.

Why is "Lymphoid hyperplasia after a viral illness" not the answer?

Lymphoid hyperplasia occurs mostly in infants without the skin signs.

What concept does this question test?

It tests Paediatric imaging: Peutz-Jeghers polyps in Radiology. Surveillance uses MR enterography or capsule endoscopy. Idiopathic intussusception in infants is usually due to lymphoid hyperplasia.

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: Peutz-Jeghers polyps?

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.