537 Oro-Nasal Fistula: A Very Rare Complication Following Routine Palatal Biopsy

Abstract Biopsies of the palate are generally well-tolerated with known complications pain, bleeding, or infection, that can usually be well-controlled. We report a case 63-year-old male who developed rare complication following biopsy an ulcer on junction between hard and soft palate. Despite uneventful routine biopsy, patient presented oro-nasal fistula complaints nasal discharge. The cause was unclear, histopathology results excluded malignancy. possible hypotheses considered for this very unusual were vascularity, underlying systemic co-morbidities. believe in wound breakdown secondary to loss vascularity mucosa from his CPAP device. has since been referred tertiary unit consideration surgical repair. To author's knowledge, there no similar published reports such palatal biopsy.