Treatment results of 368 patients with infected pancreonecrosis were analyzed. Overall lethality was 29.6±3.4%. Maximal lethality was among patients with phlegmona - 43.6±5%, minimal (12.9±3.8%) among patients with abscess. Spread phlegmonas, when closed sequestrectomy was impossible, were treated by transversal omentobursopancreatostomy. When the closed drainage of infected pancreonecrosis areas was not effective after 10-13 days, conversion to the omentobursopancreatostomy was performed. Lethality among patients with non-alternative closed drainage was 50.0±4.5%. Lethality after omentobursopancreatostomy was 19.0±4.2%.