Obstetric imaging: abdominal wall defects: 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 · Obstetric imaging: abdominal wall defects

Sample item

A fetal ultrasound shows loops of bowel floating freely in the amniotic fluid next to the cord insertion with no covering membrane. What is the diagnosis?

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

The answer and the reasoning

D. Gastroschisis

In gastroschisis, bowel herniates through a small paraumbilical defect to the right of the cord and lacks a sac, so it floats in the fluid, with little association with chromosomal anomalies. An omphalocele has a membranous covering and is often associated with other anomalies.

Option by option

  • A. Bladder exstrophy

    Bladder exstrophy has a low abdominal wall defect with the bladder open.

  • B. Omphalocele

    An omphalocele is covered by a sac and involves the cord insertion.

  • C. Umbilical hernia

    An umbilical hernia is covered by skin.

  • D. Gastroschisis (correct)

    Correct. Uncovered bowel lateral to the cord is gastroschisis.

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, Gastroschisis. In gastroschisis, bowel herniates through a small paraumbilical defect to the right of the cord and lacks a sac, so it floats in the fluid, with little association with chromosomal anomalies.

Why is "Bladder exstrophy" not the answer?

Bladder exstrophy has a low abdominal wall defect with the bladder open.

Why is "Omphalocele" not the answer?

An omphalocele is covered by a sac and involves the cord insertion.

Why is "Umbilical hernia" not the answer?

An umbilical hernia is covered by skin.

What concept does this question test?

It tests Obstetric imaging: abdominal wall defects in Radiology. An omphalocele has a membranous covering and is often associated with other anomalies.

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 Obstetric imaging: abdominal wall defects?

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.