FIBROUS DYSPLASIA AFFECTING MAXILLARY SINUS AND ZYGOMA: A CASE REPORT

Fibrous dysplasia (FD) is a benign bone disease that can affect the craniofacial skeleton. FD has a varied radiographic appearance, slow growth, and unknown etiology. A 32-year-old woman presented with a slow and painful enlargement of the left zygomatic bone for the past 3 years. The patient had no systemic, metabolic, or endocrinal diseases. Computed tomography images showed a hyperdense, heterogeneous, and expansive mass with aspect of an “opaque glass,” involving the zygomatic bone and left maxillary sinus. After incisional biopsy, the microscopic examination revealed irregular bone trabeculae (Chinese character-like) in a cellular fibrous stroma. The diagnosis of FD was made, and the lesion was surgically excised. The patient remains in periodic follow-up.