Monostotic Fibrous Dysplasia of Mandible

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Fibrous Dysplasia (FD) is a benign, congenital, skeletal, and metabolic entity of immature bone-forming mesenchyme that is characterized as a defect of differentiation and of maturation of osteoblasts of unknown etiology, wherein pathogenesis is uncertain, and which shows varied histopathology. FD represents all bone tumors and all benign tumors of about 2.5% and over 7%, respectively. FD commonly involves long bones, pelvis, ribs, and craniofacial bones. Facial and cranial bones are affected in nearly 50% of polyostotic FD patients and in 10%–27% of monostotic FD (MFD). The mandible is less commonly involved than the maxilla in MFD jawbone lesions. Clinical examination revealed tender firm to hard buccal cortical expansion. Radiographic examination revealed mixed radiopaque and radiolucent picture giving ground-glass appearance. Bone biopsy was performed for confirmatory diagnosis of FD. The lesion was subjected to surgical curettage. The patient was kept on regular follow-ups once every 3 months up to 3 years and then once every year till the 5th year. At the conclusion of 5 years, the patient was disease free. The purpose of the current report is to enlighten the case of a 32-year female patient complaining of painful bony swelling over the left back region of the lower jaw successfully treated with surgical curettage.