We report a rare case of septic pulmonary embolism (SPE) and subdural abscess caused by odontogenic infection. A 59-year-old woman was admitted to our hospital because of fever and swelling of the left cheek, which was caused by severe periodontitis of the left maxillary molars. A CT scan at presentation revealed resorption of alveolar bone at the left maxillary molars and SPE in the lung field. On the 8th disease day, dysarthria occurred, and CT and MRI scans revealed a subdural abscess. The patient was transferred to the Department of Neurosurgery, and drainage by craniotomy was performed to remove the abscess. Streptococcus constellatus was detected in the blood culture, first molar tooth extraction cavity, and subdural abscess. On the basis of these results, the patient was given a diagnosis of PSE and brain abscess caused by odontogenic infection. Subsequently, she recovered well without any sequelae.
