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  Flow cytometry MTCN  
    T-PLL SS T-LGL NK-LGL AILT ATLL
  CD1a
  CD2 ++(s) ++ ++ ++ ++ ++
  surfCD3 ++ ++ ++ + ++
  cytCD3 ++ ++ ++ + ++ ++
  CD5 + ++ +(w)/- ++ ++
  CD7 ++(s) +(w)/-
  CD10 ++
  CD16 + ++
  CD25 + ++
  CD26 +
  CD56 ++
  CD57 ++
  CD4+/CD8- + ++ ++ ++
  CD4-/CD8+ ± ++
  CD4+/CD8+ +
  CD4-/CD8-
  TdT

 

T-PLL: T-cell prolymphocytic leukaemia ; SS: Sézary syndrome ; T-LGL: T-cell large granular lymphocytic leukaemia ; NK-LGL: NK-cell large granular lymphocytic leukaemia ; AITL: Angioimmunoblastic T-cell lymphoma ; ATLL: Adult T-cell leukemia/lymphoma.

 

(w) : weak expression
(s) : strong expression

– = < 10% positivity is found in these cases
± = 10-25% positivity is found in these cases
+ = 25-75% positivity is found in these cases
++ = > 75% positivity is found in these cases
 
* rare cases can be positive