RESUMO
Mucormycosis is a rare opportunistic infection but a fulminant disease. Varying clinical forms have been described, including cutaneous localisations which are mainly observed in diabetic and burned patients. The cutaneous lesions induced by the mucormycosis affection are often atypical and gangrenous. We report a case of cutaneous mucormycosis in a Tunisian patient with diabetic ketoacidosis. He developed cutaneous necrotic lesions at the low limb. The diagnosis of mucormycosis was not initially evoked but tardily confirmed by identifying mucorale hyphae in tissue sections and Rhizopus oryzae in the sample culture. The treatment consisted of an extensive surgical debridement associated with intravenous perfusion of amphotericin B. The patient had a fatal outcome.