There are two major theories of the development of craniopharyngioma: the embryonic theory and the metaplastic theory.

These two theories correlate with the two histologic subtypes of craniopharyngiomas, that is

1. Adamantinomatous craniopharyngioma (ACP)
2. Papillary craniopharyngioma (PCP)

Quick summary of subtypes of craniopharyngioma

Some illustrations- histology and immunohistochemistry of subtypes of craniopharyngiomas.

Some MCQs related to this topic

Reference: https://www.ncbi.nlm.nih.gov/books/NBK459371/