Young man with known cysticercosis presents with epilepsy ? cerebral involvement
CT scan showed minor oedema but no calcification in the left occipital lobe ? cause
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Slightly T1 hyperintense, T2 hypointense mass (arrrow) showing minimal susceptibility artefact, i.e. cacification and surrounding vasogenic-type oedema without restriction of diffusion at the grey/white matter junction of the left occipital lobe. Minimal mass effect.
The cyst as it degenerates and dies, sets up an inflammatory reaction that can act as an epileptic focus. Once dead and calcified these lesions are less likely to cause epilepsy and are often an incidental finding on CT brain performed for another clinical reason.