TY - JOUR
T1 - Adult T-cell leukemia/lymphoma in Northeastern Brazil
T2 - A clinical, histopathologic, and molecular study
AU - Barbosa, Helenemarie Schaer
AU - Bittencourt, Achiléa Lisboa
AU - De Araújo, Iguaracyra Barreto
AU - Pereira Filho, Carlos Sampaio
AU - Furlan, Roberto
AU - Pedrosa, Célia
AU - Lessa, Gildete
AU - Harrington, William
AU - Castro, Bernardo Galvão
PY - 1999/5/1
Y1 - 1999/5/1
N2 - The state of Bahia in the northeastern coast of Brazil is a region in which HTLV-I infection is endemic. This study investigated the characteristics of 28 HTLV-I-associated lymphomas/leukemias in this region. HTLV-I-infection diagnosis was based on serologic study, Southern blot analysis, and polymerase chain reaction (PCR) in neoplastic tissue. The main clinical differences between these lymphomas and adult T-cell leukemia (ATL) cases from other endemic areas were as follows. The mean age was 47 years; 20% of the cases occurred in young adults; and a predominance was found among male subjects (2:1), blacks, and of those of mixed race (96%). Histologically, 20 cases were T-cell pleomorphic leukemia/lymphoma, 5 were Mycosis fungoides-like cutaneous lymphoma, and 3 were CD30+ large-cell anaplastic lymphoma. Immunohistochemistry demonstrated 4 cases of CD8+ lymphoma. Proviral genomic sequences were demonstrated by PCR in 9 lymph node biopsy specimens and in 3 skin biopsy specimens. Southern blot was performed and was positive in 8 cases.
AB - The state of Bahia in the northeastern coast of Brazil is a region in which HTLV-I infection is endemic. This study investigated the characteristics of 28 HTLV-I-associated lymphomas/leukemias in this region. HTLV-I-infection diagnosis was based on serologic study, Southern blot analysis, and polymerase chain reaction (PCR) in neoplastic tissue. The main clinical differences between these lymphomas and adult T-cell leukemia (ATL) cases from other endemic areas were as follows. The mean age was 47 years; 20% of the cases occurred in young adults; and a predominance was found among male subjects (2:1), blacks, and of those of mixed race (96%). Histologically, 20 cases were T-cell pleomorphic leukemia/lymphoma, 5 were Mycosis fungoides-like cutaneous lymphoma, and 3 were CD30+ large-cell anaplastic lymphoma. Immunohistochemistry demonstrated 4 cases of CD8+ lymphoma. Proviral genomic sequences were demonstrated by PCR in 9 lymph node biopsy specimens and in 3 skin biopsy specimens. Southern blot was performed and was positive in 8 cases.
KW - Adult T-cell leukemia/lymphoma
KW - HTLV-I-positive lymphoma
KW - Pleomorphic lymphoma
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M3 - Article
C2 - 10235516
AN - SCOPUS:0041028356
VL - 21
SP - 65
EP - 71
JO - Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology
JF - Journal of Acquired Immune Deficiency Syndromes and Human Retrovirology
SN - 1077-9450
IS - 1
ER -