[Relapse after surgical treatment of mycobacterium ulcerans infection (buruli ulcer): study of risk factors in 84 patients in the Democratic Republic of the Congo]. / Rechutes après traitement chirurgical exclusif de l'infection à Mycobacterium ulcerans (ulcère de Buruli): étude des facteurs de risque chez 84 patients congolais.

OBJECTIVE: To identify risk factors for relapse after exclusively surgical treatment of Mycobacterium ulcerans infection (Buruli ulcer). METHODS: Study was carried out in 102 patients treated exclusively by surgery for Buruli ulcer at various care facilities in the Congo from January 1, 2000 to January 1, 2005. RESULTS: Outcomes included relapse in 22 patients (21.5%), cure in 62 (60.7%), and unknown in 18 (17.6%). Statistical analysis identified the following variables as independent risk factors for relapse after exclusively surgical treatment: incomplete surgical excision (OR = 91.83; P = 0.0000; IC to 95%), age under 16 years (OR = 14.80; P = 0.0000; IC to 95%) and pre-ulcerative Buruli lesions (edema and plaque) (OR = 3.18; P = 0.0215; IC to 95%). CONCLUSION: Quality of excision, patient age, and clinical form of lesion are the main predictors of relapse after isolated surgical treatment of Buruli ulcer.