P-248 Analyzing factors of resected pancreatic serous cystadenoma: A multicenter analysis

About 30% of patients who were treated by resection as pancreatic tumors are evaluated cystic neoplasm. These include serous cystadenoma (SCA), Mucinous neoplasm (MCN), and Intraductal papillary mucinous (IPMN). Among them, SCA had a very low cancer progression rate less than 0.1% in multi-organ studies. Therefore, without symptoms do not undergo surgery. However, surgery is sometimes performed because difficult to distinguish from other lesions malignant tumors. This study factors that help differentiate A total 55 retrospectively studied at 7 hospitals (6 tertiary 1 secondary hospital) for 10 years 2012 2021. All diagnosed with after Of patients, only 13 preoperative evaluation. As the cause surgery, 34 (61.81%) uncertain about diagnosis, 12 (21.82%) increased size cyst. radiologic differences between those non-SCA, there significant septation (p=0.029), enhancement (p=0.003), sclerosis (p=0.045). There no size, number, shape, location cysts, properties pancreas (calcification, solid portion, or bile duct dilatation, wall thickness, atrophy), laboratory tests (blood CEA, CA 19-9, Amylase, Lipase). ongoing efforts identify need In this study, septation, enhancement, helpful discrimination, but distinguishment still difficult. Although has advantage being conducted multiple institutions, more additional studies needed due small number included.