Bilateral symmetric claustrum lesions shown on MR imaging are rarely reported, especially transient and reversible lesions associated with seizures, such as herpes simplex encephalitis,1 unidentified encephalopathy,2 and acute encephalitis with refractory repetitive partial seizures.3 To our knowledge, there are no reports of symmetric bilateral claustrum lesions with mumps encephalitis.
A 21-year-old man had been experiencing cold like symptoms with headache and fever for a week when he vomited and had a tonic-clonic seizure and was subsequently taken to a nearby emergency hospital (day 1). He had been noticing spasms on the left side of his face for 2 days. On his last visit to the hospital, he reported disorientation accompanied by fever; however, a brain MR imaging and CSF analysis showed no abnormalities. Because he was instatus epilepticus on hospitalization, midazolam was administered by intravenous infusion at 3.0 mg/h. Around this time, the patient started to experience visual hallucinations and reported seeing Read more »
*This blog post was originally published at AJNR Blog*