Q:

Which ONE of the following is not a feature of osteosarcoma?

waelhammad
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2022-12-22
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Which ONE of the following is not a feature of osteosarcoma?

  1. Fifty per cent of tumours occur around the knee.
  2. Lung secondaries common.
  3. May be associated with Paget\'s disease of bone.
  4. Peak incidence between 10 and 25 years of age.
  5. Usually metastasize to lymph nodes.
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waelhammad
2022-12-22
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The answer is E. Lymph node metastases are a feature of carcinomas rather than sarcomas, and osteosarcoma typically metastasizes to the lung (B).

The usual site for osteosarcoma is in a long bone, the femur and tibia being especially common (A).

Osterosarcoma is a tumour of young people (D) but may occur in the elderly when it is usually associated with Paget's disease of bone (C).

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