Abstract
Leishmaniasis refers to a spectrum of diseases caused by Leishmania. Clinically, three types of leishmaniasis can be distinguished: the cutaneous, mucous and visceral leishmaniasis, the latter being caused by Leishmania donovani. An 11-year-old Thai, living in Belgium for 6 years, had surgery for a vertebral osteosarcoma with pulmonary metastases, followed by polychemotherapy, then pulmonary metastasectomy. During a post-chemotherapy bone marrow aplasia, febrile episode with a general condition impairment was noted and first treated by broad-spectrum antibiotherapy, then by amphotericin B, in the absence of any accurate etiology. The outcome first was favorable. Nevertheless, 7 months later, the visceral leishmaniasis diagnosis was made because of the recurrence of the same symptoms. Classical treatments by antimony derivatives (Glucantim), then liposomal amphotericin (Ambisome) proved to be inefficient. A liposomal amphotericin-gamma interferon association suppressed the symptoms without eradicating the parasite. The patient was given a maintenance therapy based on liposomal amphotericin. The stubborn and recurring nature of this chronic visceral leismaniosis can be due to the immune deficit inherent in the polychemotherapy performed in order to treat the metastatic osteosarcoma which currently is in first full remission.
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