[Disseminated papules in a patient with acute myeloid leukemia].

Cryptococcosis most commonly occurs in immunosuppressed patients. The pathogen is the yeast Cryptococcus neoformans. This article reports on the case of a 20-year-old female patient with acute myeloid leukemia who suddenly developed disseminated livid red papules and papulovesicles. The clinical picture and in particular the histopathology findings led to the diagnosis of cutaneous cryptococcosis, which was successfully treated with amphotericin B. For the differential diagnosis generalized herpes zoster, erythema exudativum multiforme and disseminated molluscum contagiosum must be considered. To confirm the diagnosis attempts can also be made to culture the pathogen from skin biopsy preparations. Furthermore, fungal spores can be rapidly and simply detected with the Tzanck test.