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 Indian J Med Microbiol  
 

Figure 1 (A, B): A 16-year-old boy developed altered sensorium followed by loss of consciousness. Plain CT scan (A) shows a hyperdense lesion (arrow) in the right frontoparietal region, with surrounding white matter edema and mass effect. Axial plain T1W MRI (B) at the corresponding level shows a hyperintense periphery (arrow) due to presence of intracellular methemoglobin and central hypointensity (arrowhead) due to deoxyhemoglobin

Figure 1 (A, B): A 16-year-old boy developed altered sensorium followed by loss of consciousness. Plain CT scan (A) shows a hyperdense lesion (arrow) in the right frontoparietal region, with surrounding white matter edema and mass effect. Axial plain T1W MRI (B) at the corresponding level shows a hyperintense periphery (arrow) due to presence of intracellular methemoglobin and central hypointensity (arrowhead) due to deoxyhemoglobin