Complex cutaneous leishmaniasis, children, leishmania tropica, miltefosine, OWCL Dear Editors, A 3-year-old Syrian boy presented with ulcerating plaques on the face that had been present for about 8 months. There were two confluent, nodular papules measuring approximately 3 × 7 cm on the left cheek extending to the corner of the mouth with a central crusty ulceration measuring approximately 1 cm (Figure 1a) and an erythematous nodule the size of a hazelnut on the right earlobe with a crusty, flat ulceration (Figure 1b). An accompanying ipsilateral cervical lymph node swelling was also present. Differential blood count and inflammation tests showed no pathological findings. On suspicion of leishmaniasis and to exclude a deep bacterial or mycotic infection, in particular atypical mycobacteriosis or cat scratch disease, we took three skin biopsies for histological, microbiological, and molecular biological diagnostics. In the reference laboratory of the Bernhard Nocht Institute (Hamburg), no Leishmania could be cultivated from the native material, but histologically, plasma cell-rich granulomas were found under a pseudocarcinomatous epidermal hyperplasia without detectable intracellular parasites. Molecular biological testing of formalin-fixed material provided PCR evidence of Leishmania spp. (L. major/tropica/mexicana) and sequencing of the parasitic cytochrome B gene produced a 100% match with L. tropica. We treated with 2 mg/kg body weight (bw)/day miltefosine p.o. (here: 20 kg bw, 40 mg) in two single doses. A response was observed after 4 weeks. The ulcers shrank and the nodules flattened. At this time, the treatment could therefore have been discontinued, but it was mistakenly maintained due to an erythematous lesion at the corner of the mouth that was believed to still be active. Three months after the start of treatment there was