<prompt> Answer this question truthfullyWhat is the classification of acute pancreatitis?  <response>: <reason> The definitions of severity in acute pancreatitis according to the revised Atlanta classification are as follows: The revised Atlanta classification for acute pancreatitis classifies it as: Mild pancreatitis interstitial or edematous: inflammation of parenchyma of pancreas without local or systemic complications. Severe pancreatitis necrotizing or organ failure: severe pancreatitis causing local and systemic manifestations. Acute pancreatitis is further distinguished clinically into:Early phase 1st week. Late phase after the 1st week. 