<prompt> Surgical intervention in acute pancreatitis is indicated in all, EXCEPT:Infected necrosisInfected collectionImpacted gallstone in ampullaNone of the above  <response>: Surgical intervention in acute pancreatitis is reserved for patients with infected collections or infected necrosis only, or to relieve an impacted gallstone in the ampulla if endoscopic or radiologic treatments are unavailable or unsuccessful. Ref: Schwazs principle of surgery 9th edition, chapter 33. 