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Classification of the various types of groove pancreatitis. A: Typical finding of groove pancreatitis (purple area); B: Segmental head pancreatitis: the scar tissue (dark blue) expands towards the duodenum; C: Pancreatitis of the head: the scar tissue (dark blue) expands to the duodenal area, determining duodenal stenosis and displacement of the common bile duct.
