C  
Garre’s (proliferative) osteomyelitis typically affects healthy children and young adults and is produced by a low-grade odontogenic infection, often involving Staphylococcus aureus; radiographs classically show layered “onion-skin” sub-periosteal new bone rather than a destructive “moth-eaten” pattern [McWalter 1984, PMID 6584491; Kannan 2006, PMID 16364095].