Source:http://linkedlifedata.com/resource/umls/id/C1336029
NCI: A malignant neoplasm arising from the exocrine pancreas. It occurs predominantly in young women. It is characterized by the presence of extensive necrosis and hemorrhage and is composed of polyhedral cells forming solid and pseudopapillary patterns. There is morphologic evidence of perineural invasion, vascular invasion, or extensive invasion into the surrounding tissues.