Obstetric imaging: caesarean scar pregnancy: 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: caesarean scar pregnancy

Sample item

A woman with a previous caesarean section and a positive pregnancy test has bleeding. Transvaginal ultrasound shows an empty uterine cavity and cervical canal, with a gestational sac embedded in the anterior lower uterine segment at the scar and a thin myometrium. What is the diagnosis?

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

The answer and the reasoning

D. Caesarean scar ectopic pregnancy

A sac implanted within the scar niche with an empty cavity and cervix, and thin myometrium, defines a caesarean scar pregnancy. It risks haemorrhage and uterine rupture and later morbid adherent placenta. Early diagnosis allows safer treatment.

Option by option

  • A. Normal early intrauterine pregnancy

    A normal pregnancy lies within the cavity.

  • B. Cervical pregnancy

    A cervical pregnancy lies within the cervical canal.

  • C. Complete miscarriage

    A complete miscarriage leaves no sac.

  • D. Caesarean scar ectopic pregnancy (correct)

    Correct. Scar implantation with an empty cavity indicates a scar ectopic.

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, Caesarean scar ectopic pregnancy. A sac implanted within the scar niche with an empty cavity and cervix, and thin myometrium, defines a caesarean scar pregnancy.

Why is "Normal early intrauterine pregnancy" not the answer?

A normal pregnancy lies within the cavity.

Why is "Cervical pregnancy" not the answer?

A cervical pregnancy lies within the cervical canal.

Why is "Complete miscarriage" not the answer?

A complete miscarriage leaves no sac.

What concept does this question test?

It tests Obstetric imaging: caesarean scar pregnancy in Radiology. It risks haemorrhage and uterine rupture and later morbid adherent placenta. Early diagnosis allows safer treatment.

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 Obstetric imaging: caesarean scar pregnancy?

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.