Figure legends
Figure 1: Paranasal high-resolution computed tomography scan showed
accessory maxillary sinus ostia in left superior meatus
Figure 2: Reconstruction of 3D simulation image to confirm accessory
maxillary sinus ostia in superior meatus
Figure 3: Distribution of the Lund–Mackay score in patients with and
without accessory ostia in the superior meatus of bilateral maxillary
sinuses