Case 128. 
Acute necrotizing encephalopathy of childhood (1 y-o M)
         
   
Consciousness disturbance killing the infant in three days
   
         
   
Key words : acute necrotizing encephalopathy, thalamic petechiae
   
     
 
     
The horozontal section of formalin-fixed swollen brain weighing 1,155 g reveals bilateral petechial hemorrhage in the thalamus.   In the thalamus, perivascular fresh hemorrhage and spongy edema are observed without inflammatory infiltration (HE). The features are consistent with acute encephalopathy accompanying symmetrical low densities in bilateral thalamus on CT scan (Mizuguchi).