Image Based Question – 74572

A 30 years old male presented with hip pain for the last 6 months. Hip X-ray is as shown below. What is the most likel^y diagnosis?

A. Giant cell tumor

B. Simple bone cyst

C. Multiple myeloma

D. Adamantinoma

Correct Answer » A Explanation

Ans: A. Giant cell tumor

(Ref Apley 9/e p202, 215)

• Characteristic of giant cell tumor (osteoclastoma).
• The tumour always abuts against the joint margin in osteoclastoma.

X-ray (Giant cell tumor):

• Radiolucent area situated eccentrically at the end of a long bone & bounded by subchondral bone plate.
• The centre sometimes has a soap-bubble appearance due to ridging of the surrounding bone.
• Appearance of a ‘cystic’ lesion in mature bone, extending right up to the subchondral plate, is so characteristic that the diagnosis is seldom in doubt.