x-rays

Ali presented with a tender mass asbout the lateral aspect of the knee. An x-ray was taken.

Y shows AP radiograph of the upper leg at the presentation.

Z shows magnification of Y.

QUESTIONS

1. Name all the bones labeled A, B, and C as shown in Y.
2. State 1 abnormality seen in the x-rays above.
3. Give 2 differential diagnosis.

ANSWERS

1. The bones labeled:

• A- Femur
• B- Tibia
• C- Fibula

2. Onion skin periosteal reactions.

3. 2 differential diagnosis:

• E-wing's sarcoma
• Osteomyelitis

Wassalam.