Department of Radiology, University of Iowa Hospitals and Clinics;
Department of Clinical Radiology,Kyushu University;
Department of Surgery and Oncology,Kyushu University;
Department of Medicine and Bioregulatory Science, Kyushu University;
Department of Internal Medicine,Hokkaido Gastroenterology Hospital;
Serous; cystic; neoplasm; Intraductal; papil-lary; mucinous; neoplasm; Mucinous; cystic; neoplasm; Computed; tomography; Magnetic; resonance; imaging;