[Visceral leishmaniasis (kala-azar) as an opportunistic infection in immunosuppressed patients].

The occurrence of visceral leishmaniasis is rare in Switzerland. We discovered this disturbance in a patient while on immunosuppressive medication for mycosis fungoides. Untreated visceral leishmaniasis has a high mortality. It can be expected that more cases will be observed in patients treated with immunosuppressive drugs or in patients with the acquired immunodeficiency syndrome (AIDS).