Review Question - QID 210861

A 43-year-old man presents to the clinic complaining of a jaw mass. The patient began noticing the pain a couple of days ago and noted a bump at the left jaw, which began draining a purulent liquid 2 days ago. His past medical and surgical history is non-contributory except for a root canal 1 month ago. His temperature is 98.7°F (37°C), blood pressure is 117/68 mmHg, pulse is 90/min, respirations are 14/min, and oxygen saturation is 98% on room air. Physical examination revealed a 2 x 3 cm, erythematous mass at the left mandible with a yellow-tinged purulent discharge that is non-tender to palpation. Figure A demonstrates the appearance of the drainage. Cultures confirm a gram-positive bacteria. What is the most appropriate next step for this patient?