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: Pathology
“Driven snow appearance ” is seen in: 
Select and explain. 
A. Ewing’s sarcoma, B. Garre’s osteomyelitis, C. Caffey’s disease, D. Pindborg tumor
D: Pindborg tumor
Answer: D: Pindborg tumor 
Explanation: Radiographic Features of Pindborg tumour:
The lesion may appear as either a diffuse or a well-circumscribed unilocular radiolucent area, while in other cases there may appear to be a combined pattern of radiolucency and radiopacity with many small, irregular bony trabeculae traversing the radiolucent area in many directions, producing a multilocular or honeycomb pattern. Scattered flecks of calcification throughout the radiolucency have given rise to the descriptive term of a ‘driven snow’ appearance. In some instances, the lesion is totally radiolucent and is in association with an impacted tooth, thus leading to a mistaken clinical diagnosis of dentigerous cyst.
Ref: Shafer's textbook of oral pathology 7th edition page 284