Clinical  and Radiographic Findings

The CT scan (Fig 1) and the Panoramic (Fig 2) images revealed a well-demarcated and corticated unilocular radiolucent lesion in the right posterior maxilla and right maxillary sinus.  Clinically, there was evidence of a fistula behind tooth #2. Teeth in the upper right maxilla tested vital and were asymptomatic. 

Figure 1. This a coronal computed tomography (CT) scan view at presentation demonstrating a radiolucent area extending to the right tuberosity area and filling half of the right maxillary sinus.      

 

Figure 2. This is a panoramic radiograph taken at the primary presentation demonstrating a well-demarcated and unilocular radiolucency in the posterior maxilla and right maxillary sinus.