Thrombosis: embolism: practice question

A Pathology 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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Pathology · Thrombosis: embolism

Sample item

Most pulmonary emboli originate from thrombi in which location?

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

The answer and the reasoning

C. Deep veins of the lower limb

Most pulmonary emboli arise from deep venous thrombosis in the lower extremities or pelvis and travel through the right heart to the pulmonary arteries. Risk assessment and prophylaxis are important in high-risk settings.

Option by option

  • A. Left atrial appendage only

    Left atrial thrombi embolize to the systemic arterial circulation.

  • B. Portal vein

    Portal venous thrombi embolize differently and do not usually reach lungs.

  • C. Deep veins of the lower limb (correct)

    Correct. Lower-limb and pelvic DVT is the usual source.

  • D. Coronary arteries

    Coronary thrombi cause myocardial ischemia locally.

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 Pathology question

What is the answer to this Pathology question?

The best answer is C, Deep veins of the lower limb. Most pulmonary emboli arise from deep venous thrombosis in the lower extremities or pelvis and travel through the right heart to the pulmonary arteries.

Why is "Left atrial appendage only" not the answer?

Left atrial thrombi embolize to the systemic arterial circulation.

Why is "Portal vein" not the answer?

Portal venous thrombi embolize differently and do not usually reach lungs.

Why is "Coronary arteries" not the answer?

Coronary thrombi cause myocardial ischemia locally.

What concept does this question test?

It tests Thrombosis: embolism in Pathology. Risk assessment and prophylaxis are important in high-risk settings.

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 Thrombosis: embolism?

Learn each disease as a bundle: cause, key histology, markers, and the clinical hallmark. Then use the flashcards and the other Pathology 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.