Head and neck imaging: antrochoanal polyp: 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 · Head and neck imaging: antrochoanal polyp

Sample item

A teenager has unilateral nasal obstruction. CT shows a soft tissue mass filling the right maxillary sinus that extends through the widened ostium into the nasopharynx, with no bone destruction. What is the diagnosis?

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

The answer and the reasoning

B. Antrochoanal polyp

An antrochoanal polyp arises in the maxillary sinus and passes through the ostium into the choana and nasopharynx as a benign smooth mass. Angiofibroma arises at the sphenopalatine foramen and erodes bone, inverted papilloma arises from the lateral nasal wall, and a mucocele expands and remodels the sinus without the nasopharyngeal extension.

Option by option

  • A. Inverted papilloma

    Inverted papilloma arises from the lateral nasal wall and shows a convoluted cerebriform pattern.

  • B. Antrochoanal polyp (correct)

    Correct. A sinus mass extending through the ostium into the nasopharynx is an antrochoanal polyp.

  • C. Mucocele

    A mucocele is an expansile airless sinus with bone remodelling.

  • D. Juvenile nasopharyngeal angiofibroma

    Angiofibroma arises at the sphenopalatine foramen and is vascular with bone erosion.

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, Antrochoanal polyp. An antrochoanal polyp arises in the maxillary sinus and passes through the ostium into the choana and nasopharynx as a benign smooth mass.

Why is "Inverted papilloma" not the answer?

Inverted papilloma arises from the lateral nasal wall and shows a convoluted cerebriform pattern.

Why is "Mucocele" not the answer?

A mucocele is an expansile airless sinus with bone remodelling.

Why is "Juvenile nasopharyngeal angiofibroma" not the answer?

Angiofibroma arises at the sphenopalatine foramen and is vascular with bone erosion.

What concept does this question test?

It tests Head and neck imaging: antrochoanal polyp in Radiology. Angiofibroma arises at the sphenopalatine foramen and erodes bone, inverted papilloma arises from the lateral nasal wall, and a mucocele expands and remodels the sinus without the nasopharyngeal extension.

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 Head and neck imaging: antrochoanal polyp?

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.