Depending on its type, size, and localization, they can cause an intracranial mass effect with motor abnormalities, visual disturbances, aqueductal stenosis with hydrocephalus
[cureus.com]
[…] lipoma: fatty components only intracranial dermoid: more mature tissue craniopharyngioma: particularly for suprasellar lesions other pineal region tumors intracranial fat
[radiopaedia.org]
and intracranial hypertension symptoms, or even diabetes insipidus and slow growth associated with compressive hypothalamic syndromes [1,2].
[cureus.com]