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T1-weighted axial gadolinium-enhanced MRI scan showing extra-axial enhancing right frontal lesion.
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Chart illustrates peri-operative serum lactate levels.
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During the surgical resection the patient had serial of arterial blood gas (ABG) analysis which showed an increase in the lactate concentration to 7 mmol/l intraoperatively (normal range 0.3-1.3 mmol/l) (Fig. 2).
Patient intraoperative anaesthetic monitoring chart.
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The patient's cardiovascular condition remained stable during surgery (Fig. 3) and no other signs of sepsis were observed.