Chest and cardiac imaging: bronchial carcinoid: 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 and cardiac imaging: bronchial carcinoid

Sample item

A 30-year-old non-smoker has recurrent right middle lobe pneumonia. CT shows a well-defined, avidly enhancing nodule within the bronchus with distal collapse. What is the most likely diagnosis?

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

The answer and the reasoning

B. Bronchial carcinoid tumour

Typical carcinoids are slow-growing neuroendocrine tumours, often endobronchial and highly vascular, causing recurrent obstructive pneumonia or collapse in younger non-smokers. Octreotide-based scans can demonstrate them.

Option by option

  • A. Allergic mucoid impaction

    Mucoid impaction is a non-enhancing branching opacity seen in asthmatics, not an enhancing nodule.

  • B. Bronchial carcinoid tumour (correct)

    Correct. A vascular endobronchial nodule with distal collapse in a young non-smoker fits carcinoid.

  • C. Pulmonary hamartoma

    A hamartoma is a peripheral nodule with fat and popcorn calcification and does not enhance this avidly.

  • D. Squamous cell carcinoma

    Squamous carcinoma is typical of older smokers and enhances poorly with necrosis.

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, Bronchial carcinoid tumour. Typical carcinoids are slow-growing neuroendocrine tumours, often endobronchial and highly vascular, causing recurrent obstructive pneumonia or collapse in younger non-smokers.

Why is "Allergic mucoid impaction" not the answer?

Mucoid impaction is a non-enhancing branching opacity seen in asthmatics, not an enhancing nodule.

Why is "Pulmonary hamartoma" not the answer?

A hamartoma is a peripheral nodule with fat and popcorn calcification and does not enhance this avidly.

Why is "Squamous cell carcinoma" not the answer?

Squamous carcinoma is typical of older smokers and enhances poorly with necrosis.

What concept does this question test?

It tests Chest and cardiac imaging: bronchial carcinoid in Radiology. Octreotide-based scans can demonstrate them.

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 and cardiac imaging: bronchial carcinoid?

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.