[Primary cutaneous localization revealing leukemia/T-cell lymphoma associated with chronic HTLV-1 infection in a adult. A case presentation]. / Localisation cutanée révélatrice d'une leucémie/lymphome T de l'adulte.

Adult T-cell leukemia/lymphoma (ATLL) is a rare medical condition and a diagnosis that ought to be considered for patients living in an area endemic for the HTLV-1 virus (human T-lymphotrophic virus) where a T-cell lymphoproliferative diagnosis has been made. The cutaneous clinical forms may be the first manifestation of the disease. We report here an observation in a 60-year-old Senegalese woman whose skin lesions were sampled to reveal the ATLL immunophenotypic profile CD4+, CD25+, FoxP3-, and CD7-. HTLV-1 seropositivity confirmed the histopathological diagnosis, and should be corroborated by demonstration of a molecular clonal rearrangement by PCR (Polymerase Chain Reaction). This is a problem because such techniques are not always available in Africa.