Rasmussen encephalitis

Q.All are true regarding Rasmussen encephalitis except

a. an abrupt onset of severe and intractable epilepsy

b. usually begins in childhood(6 and 8 years )

c. tends to affect hemisphere bilaterally

d. Serial scans show focal or hemispheric atrophy

e. cortical swelling with hyperintensity on T2W--earliest change on MRI--

ANS.----c

The disease tends to affect one hemisphere. Classification and staging criteria have been proposed based on MR imaging findings on T2-weighted and FLAIR images: normal volume and signal (stage 0), swelling and hyperintense signal (stage 1), normal volume and hyperintense signal (stage 2), atrophy and hyperintense signal (stage 3), and progressive atrophy and normal signal (stage 4).