Radiotherapy: late effect of neck irradiation: 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 · Radiotherapy: late effect of neck irradiation

Sample item

A man treated years ago with mantle field radiotherapy for Hodgkin lymphoma should be followed up for which endocrine complication?

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

The answer and the reasoning

D. Hypothyroidism

The thyroid lies within neck and mantle fields, and radiation damage leads to progressive hypothyroidism years later. Periodic TSH testing is advised after such treatment.

Option by option

  • A. Diabetes insipidus

    Diabetes insipidus is not associated with neck fields.

  • B. Hyperparathyroidism due to pituitary failure

    Hyperparathyroidism is not the characteristic late endocrine effect.

  • C. Adrenal crisis

    Adrenal failure is not expected from this field.

  • D. Hypothyroidism (correct)

    Correct. Hypothyroidism is the commonest late endocrine effect after neck irradiation.

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, Hypothyroidism. The thyroid lies within neck and mantle fields, and radiation damage leads to progressive hypothyroidism years later.

Why is "Diabetes insipidus" not the answer?

Diabetes insipidus is not associated with neck fields.

Why is "Hyperparathyroidism due to pituitary failure" not the answer?

Hyperparathyroidism is not the characteristic late endocrine effect.

Why is "Adrenal crisis" not the answer?

Adrenal failure is not expected from this field.

What concept does this question test?

It tests Radiotherapy: late effect of neck irradiation in Radiology. Periodic TSH testing is advised after such treatment.

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 Radiotherapy: late effect of neck irradiation?

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.