Cutaneous tuberculosis: tuberculosis verrucosa cutis: practice question

A Dermatology 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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Dermatology · Cutaneous tuberculosis: tuberculosis verrucosa cutis

Sample item

A butcher has a warty plaque on the dorsum of his hand with an expanding annular border that heals centrally. How was this infection acquired?

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

The answer and the reasoning

D. Exogenous inoculation in a previously sensitised person

Tuberculosis verrucosa cutis results from inoculation into skin of someone with prior immunity and is seen in butchers, pathologists and farmers. It is also called prosector's wart.

Option by option

  • A. Contiguous spread from lymph node

    Contiguous spread produces scrofuloderma.

  • B. Hematogenous spread

    Hematogenous spread causes lupus vulgaris or miliary lesions.

  • C. Autoinoculation from sputum in an infant

    Autoinoculation from sputum is not the mechanism; inoculation of a nonsensitised person causes a tuberculous chancre instead.

  • D. Exogenous inoculation in a previously sensitised person (correct)

    Correct. Exogenous inoculation occurs in people with prior sensitisation.

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 Dermatology questions

Questions about this Dermatology question

What is the answer to this Dermatology question?

The best answer is D, Exogenous inoculation in a previously sensitised person. Tuberculosis verrucosa cutis results from inoculation into skin of someone with prior immunity and is seen in butchers, pathologists and farmers.

Why is "Contiguous spread from lymph node" not the answer?

Contiguous spread produces scrofuloderma.

Why is "Hematogenous spread" not the answer?

Hematogenous spread causes lupus vulgaris or miliary lesions.

Why is "Autoinoculation from sputum in an infant" not the answer?

Autoinoculation from sputum is not the mechanism; inoculation of a nonsensitised person causes a tuberculous chancre instead.

What concept does this question test?

It tests Cutaneous tuberculosis: tuberculosis verrucosa cutis in Dermatology. It is also called prosector's wart.

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 Cutaneous tuberculosis: tuberculosis verrucosa cutis?

Learn each condition by its primary lesion, site and signature sign. Then use the flashcards and the other Dermatology 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.