juvenile ossifying fibroma juvenile trabecular ossifying fibroma https://github.com/monarch-initiative/mondo/issues/10433 trabecular juvenile ossifying fibroma trabecular ossifying fibroma JTOF NCIT:C202205 MEDGEN:785156 Amplifications of MDM2 and RASAL1 genes have been detected in some cases. Recurrences have been reported in a minority of cases. MONDO:1060261 UMLS:C3697892 A juvenile ossifying fibroma predominantly arises in children and adolescents. It is characterized by prominent osteoid formation rimmed by osteoblasts in a fibrotic stroma. Patients usually present with painless jaw expansion that is associated with rapid growth and tooth displacement.