system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 24-year-old woman is brought to the emergency department by friends because of an episode of jerking movements of the whole body that lasted for one minute. She reports a 2-week history of fever, headache, and altered sensorium. Her fever ranges from 38.3°C (101.0°F) to 38.9°C (102.0°F). Her past medical history is significant for toothache and multiple dental caries. The patient denies any history of smoking or alcohol or drug use. She is not currently sexually active. Her vital signs include: blood pressure 110/74 mm Hg, pulse 124/min, respiratory rate 14/min, temperature 38.9°C (102.0°F). On physical examination, the patient is confused and disoriented. She is moving her right side more than her left. A noncontrast CT scan of the head reveals a ring-enhancing lesion in the left frontal lobe consistent with a cerebral abscess. The abscess is evacuated and sent for culture studies. Which of the following microorganisms did the culture most likely grow?
assistant
Streptococcus viridans