Inclusion Criteria:  Subjects 12 years of age or older  Diagnosis of any of the following that has been identified by imaging and/or biopsy:  Enchondroma Periosteal chondroma Osteochondroma Chondroblastoma Giant cell tumor of bone Aneurysmal bone cyst Unicameral (aka Simple) bone cyst Chondromyxoid fibroma Osteoblastoma Desmoplastic fibroma Fibrous dysplasia Osteofibrous dysplasia Intralesional operative management for their tumor planned Written informed consent signed by the subject if 18 years of age or older or by parent(s) or legally authorized representative if younger than 18 years of age. If younger than 18 years of age, the child must be able to be assent.  Exclusion Criteria:  Iodine allergy Women who are pregnant or breastfeeding Incarcerated individuals