A 28 year old male was seen with complaints of left-sided nasal obstruction. The CT scan showed a densely calcified solid mass occupying the right nasal cavity extending into the ethmoid sinus, frontal sinus and maxillary ostium with thinning of the anterior maxillary sinus wall and causing nasal septal deviation to the left side (See Figure 1).
The mass was surgically removed using a Weber-Ferguson approach. The two solid white balls of bony consistency were removed from the maxillary sinus and sent for histological examination. The histopathology report showed a Hallmark sign of Chinese letter pattern imparted by a narrow, curved, misshaped bone trabeculae that are surrounded by fibrous elements. The lesion was reported as fibrous dysplasia (See Figure 2).