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Non enhancing right temporal lobe brain lesion!

my boyfriend's son is 17 yrs old going on 18.  this past weekend he suffered a seizure at his mother's house, where he lives.  he was combative and lost conscousness for a bit.  at the time he was playing a video game.  we found out this day that he had a smaller type seizure at a friends house about a month ago that he did not tell us about.  during both times he was playing video games.  he also complains of periodic headaches, but they are not bad.  EMS was called and he was taken to the ER.  at first they did a cat scan with contrast that was normal.  the next morning they did an MRI with contrast.  they found a 1.1cm right temporal lobe 'lesion'.  the doctor said it "did not" enhance with contrast and that it had "no rings".  also, all his blood work came back normal.  does anybody have any idea on what this could possibly be or what the treatment could be?  he was started on 500 mg keppra twice per day and is to follow up with a neurologist in 10 days.  he also had an EEG done but the results were not available.      
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351246 tn?1379682132
Well since there were no rings on MRI with contrast, the lesion is not infectious, inflammatory neoplastic, or vascular in origin. Since it did not enhance with contrast it is unlikely to be a tumor or even a MS lesion. Thus in all probability it is a focus from where seizure activity originates.  Please discuss with your doctor. Take care!

The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.
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thank you so much!!
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