Flow cytometry study of BM:
13% T cells with expression of CD7, CD2, CD3, CD56, gamma delta TCR, CD45 (bright) and CD8 (partial), but no expression of CD5, CD1a, CD4 or TdT.
Molecular test:
Clonal TCR gamma gene rearrangement was detected by PCR.
Chromosome analysis:
46 X Y.
FISH: trisomy 8
IHC stains:
13% T cells with expression of CD7, CD2, CD3, CD56, gamma delta TCR, CD45 (bright) and CD8 (partial), but no expression of CD5, CD1a, CD4 or TdT.
Molecular test:
Clonal TCR gamma gene rearrangement was detected by PCR.
Chromosome analysis:
46 X Y.
FISH: trisomy 8
IHC stains:
Diagnosis: Hepatosplenic gamma delta T-cell lymphoma.