craniopharyngioma

noun

cra·​nio·​pha·​ryn·​gi·​o·​ma -ˌfar-ən-jē-ˈō-mə, -fə-ˌrin-jē-ˈō-mə 

plural craniopharyngiomas also craniopharyngiomata -mət-ə 

: a tumor of the brain near the pituitary gland that develops especially in children or young adults from epithelium derived from the embryonic craniopharyngeal canal and that is often associated with increased intracranial pressure