Correct!
4. The ribs


The heart is not only normal in size but the contour is also normal. The costophrenic angles are sharp and no pleural abnormality is seen. The thoracic spine shows no evidence of paravertebral abnormality and the vertebral body heights appear well-maintained. The left inferior ribs, however, appear irregular.


Which of the following represents the most appropriate description of the appearance of the ribs in Figure 1? (Click on the correct answer to be directed to the fourth of 11 pages)

  1. Lytic, destructive lesions
  2. Callus formation
  3. Aggressive periosteal reaction
  4. Smooth erosive change
  5. Osteoblastic lesions

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