Normal pregnancy: circumvallate placenta: practice question

A OBG 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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OBG · Normal pregnancy: circumvallate placenta

Sample item

A placenta examined after delivery has a thick, raised, greyish-white ring on the fetal surface with the membranes folded back on themselves. In which complication is this variant linked?

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

The answer and the reasoning

D. Antepartum haemorrhage and preterm delivery

In circumvallate placenta the chorionic plate is smaller than the basal plate, and the membranes double back on themselves to form a thick ring. It is associated with antepartum bleeding, preterm labour and growth restriction. It is usually discovered after delivery.

Option by option

  • A. Vasa praevia

    Vasa praevia is related to velamentous cord insertion.

  • B. Placenta accreta

    Accreta is associated with praevia and scars, not circumvallate shape.

  • C. Fetal polycythaemia

    Polycythaemia is associated with twin transfusion or maternal diabetes.

  • D. Antepartum haemorrhage and preterm delivery (correct)

    Correct. The variant is linked with antepartum bleeding and preterm birth.

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 OBG question

What is the answer to this OBG question?

The best answer is D, Antepartum haemorrhage and preterm delivery. In circumvallate placenta the chorionic plate is smaller than the basal plate, and the membranes double back on themselves to form a thick ring.

Why is "Vasa praevia" not the answer?

Vasa praevia is related to velamentous cord insertion.

Why is "Placenta accreta" not the answer?

Accreta is associated with praevia and scars, not circumvallate shape.

Why is "Fetal polycythaemia" not the answer?

Polycythaemia is associated with twin transfusion or maternal diabetes.

What concept does this question test?

It tests Normal pregnancy: circumvallate placenta in OBG. It is associated with antepartum bleeding, preterm labour and growth restriction. It is usually discovered after delivery.

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 Normal pregnancy: circumvallate placenta?

Learn management algorithms as steps: PPH, eclampsia, ectopic pregnancy. Then use the flashcards and the other OBG 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.