Mixed neuroendocrine non-neuroendocrine neoplasms in gastroenteropancreatic tract

Table 2 Types of mixed neuroendocrine non-neuroendocrine neoplasm according to morphology

Types	Description
Collision	The juxtaposition of two populations of coexisting malignant cells that generally do not have a common precursor and are separated with no transition zone between the two
Composite	Two morphologically distinct components that coexist in an intermixed population or with a predominant component and a focal area of another minority component
Amphicrine	A population of single cells that display the phenotypes of at least two neoplasms