The radiographs in Figure 1-3 correspond to a horse that presented for chronic nasal discharge. The discharge was bilateral and there was a reduction in the air flow through the nasal passages. Due to the reduced airflow, it was decided to first radiograph the gelding's skull and then potentially scope the upper airway.
Radiographic exam revealed a soft tissue mass that was located in the maxillary sinus. In Figures 1-2 A and B the soft tissue mass appears as a round, white structure that is highlighted by the red dotted circles. In Figure 3 there appears to be a soft tissue mass in both the left and right maxillary sinus (red dotted circles). The mass appears larger on the left side of the skull.
The gelding was NOT sedated for endoscopic exam in order to reduce the likelihood of respiratory distress.