This tumor is far less common than conventional<unk>  fibroma, and is considered a rare tumor. Patients usually come to clinical attention when <15 years of age, but a wide age range (3 months to 70 years) can be affected. Both genders are affected equally, with the paranasal sinuses most commonly affected. Specifically, the ethmoid sinus is affected most often, followed by frontal sinus, maxillary sinus and sphenoid sinus. The maxilla is the second most common location after the paranasal sinuses, while the mandible and temporal bone are infrequently affected. This tumor does not frequently extracranial sites nor soft tissues sites.
Juvenile active ossifying fibroma
Peripheral ossifying fibroma
Juvenile hyaline fibromatosis
Solitary fibrous tumor
Aponeurotic fibroma
Polyostotic fibrous dysplasia
Non-ossifying fibroma
Ameloblastic fibroma