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
The most likely pathology associated with the following radiograph is: 
Select and explain. 
A. Chronic suppurative (or rarefying) osteomyelitis, B. Acute osteomyelitis, C. Garre's osteomyelitis, D. Sclerosing osteomyelitis
C: Garre's osteomyelitis
Answer: C: Garre's osteomyelitis 
Explanation: Garre’s osteomyelitis
The condition occurs almost exclusively in young people and has a predilection for the mandible. The condition presents purely as a periosteal reaction to low-grade infection.
Radiological signs
There may be a grossly carious tooth present or evidence of pericoronitis. Radiological change is usually restricted to the laying down of periosteal new bone either as an “onion skin” reaction or as a more extensive thickening of the whole body of the mandible.
Key Concept