title: Human T-cell lymphotropic virus type 1 (HTLV-1) and lymphoid malignancies in Dominica: a seroprevalence study.
abstract: Human T-cell lymphotropic virus type 1 (HTLV-1) is endemic in certain regions of the world where it is associated with lymphoid malignancies. Herein we aim to describe the seroprevalence of HTLV-1 in lymphoid malignancies in Dominica. We carried out a 10-year retrospective study of histologically proven hematologic malignancies and HTLV-1 seropositivity at the Princess Margaret Hospital, Dominica. Ninety-eight cases were reviewed (59% males, 41% females), ranging in age from 3 to 91 years. HTLV-1 was seropositive in 38.6% (31/80) of all hematologic malignancies. Three of 6 cases of Hodgkin disease (50%), 16 of 36 (44.4%) of non-Hodgkin lymphoma, and 3 out of 8 unclassified lymphomas (37.5%) were seropositive; all 6 cases (100%) of acute adult T-cell leukemia/lymphoma (ATLL) were seropositive. One case each of chronic lymphocytic leukemia and myeloproliferative disorder was seropositive. HTLV-1-seropositive lymphomas presented at a younger age than did seronegative cases. Thus, HTLV-1 is significantly associated with lymphoid malignancies in Dominica, and further studies are needed before a causal relationship with Hodgkin disease can be established.
authors.affiliation: Ross University School of Medicine, Dominica, West Indies. oadedayo@hotmail.com
authors.forename: Olayinka A
authors.initials: OA
authors.lastname: Adedayo
authors.forename: Sani M
authors.initials: SM
authors.lastname: Shehu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D015480:Deltaretrovirus Antibodies / Q000032:analysis; D019424:Dominica / Q000453:epidemiology; D005260:Female; D015490:HTLV-I Infections / Q000175:diagnosis / Q000453:epidemiology*; D015368:Human T-lymphotropic virus 1 / Q000302:isolation & purification*; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D016036:Seroepidemiologic Studies
chemical_list: D015480:Deltaretrovirus Antibodies