Fibrous Dysplasia of Parietal Bone: A Case Report and Review of Literature.

Fibrous dysplasia (FD) is a rare, benign, and slowly progressive bone disorder that affects one or more bones, where the normal bone is replaced by atypical fibrous connective tissue, making the bone weak, fragile, and more susceptible to fracture. FD can affect a single bone (monostotic FD) or multiple bones (polyostotic FD). The clinical manifestations and progression of FD vary from one individual to the other. The diagnosis is based on radiological and histopathological findings; a bone biopsy is the diagnostic test of choice for FD. The management of FD depends on the type and severity of the condition. The modality of management is mainly conservative. However, surgery is offered to preserve the function and prevent complications. Surgery is the ideal treatment that helps in definitive diagnosis, determining disease progression or malignant transformation, removing a compressive lesion, cosmetic surgeries, and failure of non-surgical treatments. We reported a new case of monostotic fibrous dysplasia involving the right partial bone in a 27-year-old male who underwent a successful operative excision of the lesion. The patient clinically improved and was discharged later with instructions for his follow-up. We report this case of monostotic FD as it highlights the importance of considering FD in the differential diagnosis of bone lesions, especially in young patients presenting with bone pain or deformities.