Dong D, Wang Y, Li C, et al. - Researchers conducted the study for comparing the clinical features of osteoma, ossifying fibroma (OF) and fibrous dysplasia (FD) in the paranasal sinus and craniofacial regions. A total of 282 patients (112 males, 170 females) with osteoma (161), OF (44), and FD (77) involving the paranasal sinus, skull base and orbit treated surgically from January 2012 to August 2018 have been retrospectively analyzed. There are variations in the onset age, location, and recurrence rate among osteoma, OF and FD affecting the paranasal sinus and craniofacial region. Osteoma most often occurs in the ethmoid sinus, while OF and FD involve the maxilla most and are more likely to involve the orbit and the skull base. Endoscopic surgery is currently the primary treatment procedure, but individualized treatment regimen should be established for patients.