Neuroimaging: dysembryoplastic neuroepithelial tumour: 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 · Neuroimaging: dysembryoplastic neuroepithelial tumour

Sample item

A 10-year-old has had drug-resistant focal seizures since early childhood. MRI shows a wedge-shaped cortical lesion in the temporal lobe with a multicystic T2 appearance, no surrounding oedema, no mass effect and little or no enhancement. What is the most likely diagnosis?

AOligodendrogliomaBGlioblastomaCMeningiomaDDysembryoplastic neuroepithelial tumour

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

The answer and the reasoning

D. Dysembryoplastic neuroepithelial tumour

DNET is a benign cortical glioneuronal tumour of children and young adults presenting with refractory seizures. It is stable over years, lacks oedema and is cured by resection of the lesion.

Option by option

A. Oligodendroglioma
Oligodendroglioma occurs in adults, mostly frontal, with dense calcification.
B. Glioblastoma
Glioblastoma enhances irregularly with necrosis and extensive oedema in older adults.
C. Meningioma
A meningioma is extra-axial with a dural base and homogeneous enhancement.
D. Dysembryoplastic neuroepithelial tumour (correct)
Correct. A cortical multicystic lesion with no oedema in a child with refractory seizures fits DNET.

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.

Questions about this Radiology question

What is the answer to this Radiology question?

The best answer is D, Dysembryoplastic neuroepithelial tumour. DNET is a benign cortical glioneuronal tumour of children and young adults presenting with refractory seizures.

Why is "Oligodendroglioma" not the answer?

Oligodendroglioma occurs in adults, mostly frontal, with dense calcification.

Why is "Glioblastoma" not the answer?

Glioblastoma enhances irregularly with necrosis and extensive oedema in older adults.

Why is "Meningioma" not the answer?

A meningioma is extra-axial with a dural base and homogeneous enhancement.

What concept does this question test?

It tests Neuroimaging: dysembryoplastic neuroepithelial tumour in Radiology. It is stable over years, lacks oedema and is cured by resection of the lesion.

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 Neuroimaging: dysembryoplastic neuroepithelial tumour?

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.