[A functioning or non-functioning pancreatic endocrine neoplasm with indolent or uncertain behavior. It is always confined to the pancreas. Neoplasms associated with an indolent clinical course do not show evidence of angioinvasion or perineural invasion microscopically, and are always less than 2 cm in diameter. Neoplasms associated with uncertain behavior are 2 cm or larger in diameter and/or show microscopic evidence of angioinvasion and/or perineural invasion. ( NCI )]
UMLS (NCI) C1337011Well Differentiated Pancreatic Endocrine Neoplasm
Well Differentiated Pancreatic Endocrine Tumor