Abstract
Most individuals infected with the protozoan parasite Leishmania do not demonstrate overt disease, because of effective immune protection produced by T-cell mediated immunity. Acquired defects in T-cell responses may lead to emergence of leishmaniasis many years after exposure in endemic areas. We describe a case of a 75 year old man, who presented with a cutaneous manifestation of leishmaniasis 40 years after exposure, co-incident with the diagnosis of chronic lymphocytic leukaemia.

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