Prevotella brain abscess in a healthy young patient with a patent foramen ovale

• Brain abscess caused by isolated Prevotella species are very rare.
• Most of cases of etiologies of Prevotella brain abscess are odontogenic.
• Patent foramen ovale (PFO) may cause of brain abscess.
• We report Prevotella brain abscess patient who had PFO without dental disease.

Brain abscesses are frequently caused by poly-microbial conditions. Comparatively, brain abscesses caused by Prevotella species are very rare. Right-to-left cardiac shunting due to a patent foramen ovale may predispose patients to infection. We report an isolated Prevotella brain abscess that occurred in a healthy, young, male patient with a patent foramen ovale. The patient did not have a clinically obvious odontogenic source of infection, and no other distant extracranial infectious sources were observed. The patient was successfully treated with stereotactic aspiration and antibiotics