We report a case of subdural abscess secondary to abscess of the infratemporal fossa as a complication of odontogenic infection. The patient was an 84-year-old woman who was referred to our hospital because of swelling in her right temporal region and poor oral intake following extraction of the right lower jaw canine and first premolar teeth. Contrast-enhanced computed tomography revealed an infratemporal fossa abscess. Surgical drainage of the abscess was performed under general anesthesia via a temporal skin incision, and intravenous antibiotic therapy was initiated. Although there were no signs of active inflammation, three weeks after the surgery, contrast-enhanced magnetic resonance imaging revealed multiple subdural abscesses extending from the left temporal lobe to the frontal lobe. Thus, craniotomy was performed to drain the abscess. The patient discharged 32 days after the operation, without sequelae.
While treating an infratemporal abscess, it is necessary to consider the possibility of complication by intracranial abscess formation.
