title: Nonossifying fibroma (metaphyseal fibrous defect) of the mandible in a 15-year-old boy.
abstract: We describe a rare case of nonossifying fibroma of the mandible in a 15-year-old boy who presented with a left mandibular swelling. Conventional imaging showed an expansile radiolucent lesion involving the angle and the body of the left mandible. The lesion was curetted, and a miniplate was implanted at the excision site. Microscopic examination of the removed specimen revealed a cellular lesion characterized by a proliferation of uniform spindle-shaped cells in a vague but prominent storiform pattern, which represented the classic appearance of nonossifying fibroma. Three months later, radiography detected a fracture of the implantation plate. The area was re-explored with curettage of the soft tissue, which on microscopy demonstrated findings similar to the initial curettage findings. Follow-up radiology revealed satisfactory healing of the jaw, and no further recurrence was seen 2 years after the initial surgery. We present this case to highlight the importance of recognizing nonossifying fibroma in the mandible, which can be easily confused with more common mandibular lesions.
authors.affiliation: Department of Diagnostic Pathology and Laboratory Medicine, Mount Sinai Roosevelt Hospital, 1000 Tenth Ave., New York, NY 10019, USA. mannanrifat03@gmail.com.
authors.forename: Abul Ala
authors.initials: AA
authors.lastname: Mannan
authors.forename: N Gopendro
authors.initials: NG
authors.lastname: Singh
authors.forename: Salah
authors.initials: S
authors.lastname: Al-Waheeb
authors.forename: Taher N
authors.initials: TN
authors.lastname: Taher
authors.forename: Emad El Din El Din
authors.initials: Eel D
authors.lastname: Mohammed
mesh_terms: D000293:Adolescent; D005350:Fibroma / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D009364:Neoplasm Recurrence, Local / Q000473:pathology / Q000601:surgery; D010784:Photomicrography; D014057:Tomography, X-Ray Computed