Abstract Intraductal papillary mucinous neoplasms (IPMNs) are rare pancreatic tumors that are diagnosed more and more frequently as imaging for evaluation of the pancreas becomes more widespread. Patients with these tu-mors may arrive at an emergency room with acute abdominal pain that often becomes chronic, accompanied by repeated episodes of pancreatitis. In this paper we describe the case a patient with IPMN which was a cause of acute pancreatitis. This patient came to the emergency room for severe abdominal pain. Key words Intraductal papillary mucinous neoplasms (IPMNs), pancreatic tumors, acute abdominal pain, pancreatitis. Intraductal papillary mucinous neoplasms (IPMNs) are rare pancreatic tumors that are diagnosed more and more frequently as imaging for evaluation of the pancreas beco-mes more widespread (1). Patients with these tumors may arrive at an emergency room with acute abdominal pain that oft en becomes chronic and may be accompanied by repeated episodes of pancreatitis (2).In this paper we describe the case of a patient with IPMN which was a cause of acute pancreatitis. Th is patient came to the emergency room for severe abdominal pain.