42 years old Japanese patient suffered from marked pancytopenia:  
WBCs : 2100/ul  
RBCs : 3.1 Millions/ul  
PLATELETS: 29000/ul  
 
CT HEAD,NECK,CHEST,ABDOMEN & PELVIS ARE UNREMARKABLE.  
 
* IMMUNOSTAINING RESULT:  
- NEGATIVE CD10, BCL-6, PAN-CK,CD138, EMA, CD3, CD79a, LOW Ki67 [4%].  
- POSITIVE: CD45, VIMENTIN, BCL-2