This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Radiology
Not a radiological feature of scleroderma 
Select and explain. 
A. Acroosteolysis, B. Calcinosis, C. Erosion of superior aspect of ribs, D. Bullet shaped vertebra
D: Bullet shaped vertebra
Answer: D: Bullet shaped vertebra 
Explanation: Bullet shaped vertebra is seen in Achondroplasia.