Chest imaging: 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 · Chest imaging

Sample item

What sign can indicate left lower-lobe collapse on frontal chest radiograph?

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

The answer and the reasoning

C. Loss of left hemidiaphragm silhouette

Left lower-lobe opacity may silhouette the left hemidiaphragm because the collapsed lobe lies adjacent to it in the posterior lower chest.

Option by option

  • A. Bilateral hilar enlargement only

    Hilar enlargement is nonspecific.

  • B. Free subdiaphragmatic air

    Free air indicates abdominal perforation.

  • C. Loss of left hemidiaphragm silhouette (correct)

    Correct: lost diaphragmatic border helps localize left lower-lobe disease.

  • D. Right apical pleural cap

    Apical cap has a different cause.

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, Loss of left hemidiaphragm silhouette. Left lower-lobe opacity may silhouette the left hemidiaphragm because the collapsed lobe lies adjacent to it in the posterior lower chest.

Why is "Bilateral hilar enlargement only" not the answer?

Hilar enlargement is nonspecific.

Why is "Free subdiaphragmatic air" not the answer?

Free air indicates abdominal perforation.

Why is "Right apical pleural cap" not the answer?

Apical cap has a different cause.

What concept does this question test?

It tests Chest imaging in Radiology. The correct option holds because: Correct: lost diaphragmatic border helps localize left lower-lobe disease.

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 Chest imaging?

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.