Role of image guided PCD in the treatment of infected ANC and WON

What is the role of image guided PCD in the treatment of infected ANC and WON? 

The role of PCD in the management of infected ANC and WON is controversial. Open surgical necrosectomy is still considered the gold standard treatment in infected pancreatic necrosis, because it involves nonliquefactive tissue that is difficult to remove with percutaneous drainage catheters. However, open necrosectomy is associated with a high mortality rate and significant morbidity. Image-guided PCD generally has a lower morbidity and mortality rate and can be considered in patients with appropriate percutaneous access either as potential definitive treatment or as a bridge to surgery. It is not uncommon for drains to be left in place for a month or longer. Effective percutaneous drainage also requires vigorous catheter irrigation and frequent catheter upsizing and exchange 

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