Which statement best describes subacute sclerosing panencephalitis?
|A||Demyelination is characteristic|
|B||It is a common event occurring in 1 of 300000 cases of mumps|
|C||It is a late CNS manifestation of mumps|
|D||It is a progressive disease involving both white and grey matter|
a. SSPE is a late and rare manifestation of measles.
b. It is a progressive encephalitis involving both white and gray matter.
c. Demyelination is seen only at an advanced stage of the disease in a few cases.
d. In 1985, viral RNA was demonstrated in brain cells from a patient with SSPE by the use of in situ hybridization.