Bone tumours: practice question

A Orthopaedics 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.

Try it

Orthopaedics · Bone tumours

Sample item

A sunburst periosteal reaction with Codman's triangle in the metaphysis of a teenager's distal femur suggests:

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

The answer and the reasoning

B. Osteosarcoma

Osteosarcoma is the commonest primary malignant bone tumour in adolescents. Radiographs show a destructive lesion with new bone formation, sunburst pattern and Codman's triangle. Ewing sarcoma gives an onion-skin periosteal reaction in the diaphysis.

Option by option

  • A. Ewing sarcoma

    Ewing sarcoma gives an onion-skin pattern in the diaphysis.

  • B. Osteosarcoma (correct)

    Correct. These periosteal changes are classic for osteosarcoma.

  • C. Giant cell tumour

    Giant cell tumour is epiphyseal with a soap-bubble appearance in adults.

  • D. Multiple myeloma

    Myeloma gives punched-out lytic lesions in older adults.

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 Orthopaedics questions

Questions about this Orthopaedics question

What is the answer to this Orthopaedics question?

The best answer is B, Osteosarcoma. Osteosarcoma is the commonest primary malignant bone tumour in adolescents.

Why is "Ewing sarcoma" not the answer?

Ewing sarcoma gives an onion-skin pattern in the diaphysis.

Why is "Giant cell tumour" not the answer?

Giant cell tumour is epiphyseal with a soap-bubble appearance in adults.

Why is "Multiple myeloma" not the answer?

Myeloma gives punched-out lytic lesions in older adults.

What concept does this question test?

It tests Bone tumours in Orthopaedics. Radiographs show a destructive lesion with new bone formation, sunburst pattern and Codman's triangle. Ewing sarcoma gives an onion-skin periosteal reaction in the diaphysis.

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 Bone tumours?

Pair each fracture with its classic complication and nerve injured. Then use the flashcards and the other Orthopaedics 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.