title: Imaging lexicon for acute pancreatitis: 2012 Atlanta Classification revisited.
abstract: The original 1992 Atlanta Classification System for acute pancreatitis was revised in 2012 by the Atlanta Working Group, assisted by various national and international societies, through web-based consensus. This revised classification identifies two phases of acute pancreatitis: early and late. Acute pancreatitis can be either oedematous interstitial pancreatitis or necrotizing pancreatitis. Severity of the disease is categorized into three levels: mild, moderately severe and severe, depending upon organ failure and local/systemic complications. According to the type of pancreatitis, collections are further divided into acute peripancreatic fluid collection, pseudocyst, acute necrotic collection, and walled-off necrosis. Insight into the revised terminology is essential for accurate communication of imaging findings. In this review article, we will summarize the updated nomenclature and illustrate corresponding imaging findings using examples.
authors.affiliation: Department of Radiology/Interventional Radiology, Institute of Liver and Biliary Sciences, New Delhi, India binitsurekapgi@gmail.com.
authors.forename: Binit
authors.initials: B
authors.lastname: Sureka
authors.affiliation: Department of Radiology/Interventional Radiology, Institute of Liver and Biliary Sciences, New Delhi, India.
authors.forename: Kalpana
authors.initials: K
authors.lastname: Bansal
authors.affiliation: Department of Radiology/Interventional Radiology, Institute of Liver and Biliary Sciences, New Delhi, India.
authors.forename: Yashwant
authors.initials: Y
authors.lastname: Patidar
authors.affiliation: Department of Radiology/Interventional Radiology, Institute of Liver and Biliary Sciences, New Delhi, India.
authors.forename: Ankur
authors.initials: A
authors.lastname: Arora
keywords: acute pancreatitis; acute peripancreatic fluid collection; imaging; pseudocyst; walled-off necrosis