** Can obstruct the biliary or pancreatic ducts which can cause a double duct sign on imaging and can also cause painless jaundice

</spoiler>

* <spoiler text="What are some of the cytologic features that lead you to the diagnosis?">

* Cellular specimen

* Drunken honeycomb

</spoiler>

* <spoiler text="Differential diagnosis?">

* Chronic pancreatitis