[1] Classification is based on cellular differentiation (ductal, acinar, neuroendocrine, other) and gross appearance (intraductal, cystic, solid).

[2] These unique microscopic features and genetic markers are what allow for proper diagnosis and treatments in patients with pancreatic cancers.

[2][5] The last type of exocrine tumors include pancreatic mucinous cystic neoplasms,[2] which have fluid filled cavities.

[2][7] Often times, these large surges in hormones lead to a relatively early detection due to symptoms that arise in response.

On the other end of the spectrum, non-functioning types of endocrine tumors do not secrete hormones and thus do not give rise to obvious clinical symptoms.