Haemorraghic necrotizing pancreatitis may lead to a serious disease with multi-organ failure, which is to be treated with intensive care. Patients suffering from infected necrosis are usually operated (necrosectomy). By doing this, it is possible to get a microbiological analysis. The most common virulent species are Enterobacteriaceae. According to the literature, fungal infections appear in 15-30% of the cases. Since 1996, 73 patients were treated surgically in our department. A number of 50 patients (68,5%) developed a fungal infection during the course of the disease. The mortality rate was 62%.