Case 27. 
Schistosomiasis japonica accompanying appendicitis (68 y-o F)
         
    Acute appendicitis resected from a Mishima resident (southern part of Mt. Fuji)    
         
   
Key words : Schistosoma japonicum, acute appendicitis, pseudotubercle
   
     
 
     
Numbers of ova are seen in the ulcerated and inflamed appendiceal wall (HE, low power).   Most of the ova are calcified, indicating a remote infestation (HE, high power).
     
 
     
Reference case 27A
Schistosomiasis japonica in a Kofu resident (northern part of Mt. Fuji). Colonic biopsy reveals lamina proprial occurrence of distorted ova (HE).
  Reference case 27A
Schistosomiasis japonica in a Kofu resident (northern part of Mt. Fuji). The ovum is acid-fast, a distinguishable feature of Schistosoma japonicum ova (Ziehl-Neelsen).
     
   
     
Reference case 27A
Schistosomiasis japonica in a Kofu resident (northern part of Mt. Fuji). The 1:500 diluted patient's own serum specifically reacts with the ovum (indirect immunoperoxidase).