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In patients with Crohn's disease WCE revealed significantly more inflammatory lesions in the proximal and middle part of the small bowel in comparison to MR enteroclysis, whereas in patients with obscure GI bleeding WCE was superior to MR enteroclysis.

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INTRODUCTIONThe course of acute pancreatitis ranges from a mild transitory edematous to a severe necrotizing form. Necrotizing pancreatitis occurs in about 20% of all patients suffering from acute pancreatitis [1] . If infection of the necrotic tissue occurs mortality rates of up to 50% are reported with sepsis and multiorgan failure as most frequent causes [2][3][4][5] . It is generally accepted that in infected necrotizing pancreatitis the infected non-vital solid tissue has to be removed in order to control the sepsis. The standard treatment has traditionally been surgery [5,6] . By using modern surgical techniques like open packing, repeated laparatomies, closed packing or closed continuous lavage mortality rates could be decreased to 20%-40% [7][8][9][10][11][12] . However, these techniques are associated with a considerable surgical trauma which often causes escalation of multiorgan failure and sepsis [7,13] . Moreover, total anaesthesia is mandatory. Thus, in the last decade minimal invasive treatment regimes and in particular percutaneous drainage therapy were included in the management of infected necrotizing pancreatitis. Ultrasound (US) or computed tomography (CT) guided placement of drainages is reported to be effective in up to 90% for drainage of fluid collections or abscesses with purely liquid content [14] . However, the success rates Abstract AIM: To assess the outcome of patients with acute necrotizing pancreatitis treated by percutaneous drainage with special focus on the influence of drainage size and number.

The long-term results of this prospective, randomized, single-center study revealed a high incidence of relevant restenosis and neurologic symptoms after CAS. CEA seems to be superior to CAS concerning the development of restenosis and significant prevention of stroke. However, the long-term results of the ongoing multicenter trials have to be awaited for a final conclusion.