Table 1.

Characteristics of Two AIDS-Associated B-NHLs.

Histological and Virological Characteristics	Lymphoma A	Lymphoma B
REAL classification	Diffuse large B cell	Diffuse large B cell
KIEL classification	Centroblastic	Immunoblastic
Ki 1	Positive	Positive
Tumor site	Extranodal tonsils	Extranodal lymph node
Stage of immunodeficiency	-	WR 6
EBV serology	Positive	Positive
EBNA-2	Positive*	Positive*
HIV-1 serology	Positive	Positive
p24	Positive	-

^*Immunohistochemistry and/or mRNA in situ.

(-) No data available.