Colombian patients with New World cutaneous leishmaniasis were treated with a combination of a topical formulation (15% paromomycin sulfate/5% methylbenzethonium chloride, twice a day) and parenteral meglumine antimonate (20 mg of antimony [Sb]/kg.d]). Cohort 1 received topical therapy for 10 days and Sb for 7 days; 18 (90%) of the 20 patients were cured (follow-up, 12 months). Other clinical data suggested that neither the topical formulation alone nor the 7-day regimen of Sb alone would have cured many patients. In a subsequent cohort, which received topical therapy for 10 days and Sb for 3 days, the cure rate was 42% (eight of 19 patients). In Colombian cohorts (historical controls) treated with Sb alone for 10-15 days, the cure rate was 31%-36%. Side effects in cohort 1 patients consisted of local reactions to the topical formulation: burning and pruritus in 25% of patients and vesicle formation in 15% of patients. This is the first report that a regimen partially composed of topical antimicrobial agents can be highly effective for treatment of New World cutaneous leishmaniasis.

Requirement for TPN was associated with more leaks, complications and mortality. Leakage was presumably responsible for almost half of deaths. Hyperlipidaemia and female gender were associated with lower rates of complications. These findings warrant a better understanding of metabolic status on perioperative outcome after left colectomy.

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