Patient 2 months back, presented with headache and fever. CT and MRI done were consistent with the clinical diagnosis of Brain Abscess in the frontal lobe, which measures ~5.1cm x 4.6cm x 3.1cm (~37mL as per 0.52 x ABC). Abscess was aspirated at that time.
Present MRI showed T2 hyperintense lesion with hypointense rim / capsule. Perilesional vasogenic oedema was seen in frontal-parietal and temporal white matter.
Lesion is showing a T1 iso to mildly hyperintense rim.
SWI images showed peripheral blooming artefacts of the lesion, which are seen tracking towards the calvarium - indicating the possibility of post aspiration haemorrhage.
Track is also seen showing susceptibility artefacts.
The entire contents of the abscess cavity is showing restricted diffusion.
Smooth rim enhancement of the lesion in post contrast images are noted.
The track is also noted enhancing. Surrounding parenchyma also showed intense enhancement. No other lesions were seen. No CVT / Oto-mastoiditis seen. Lesion in the current study measured only about ~8mL.
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