Intracranial lipomas are benign congenital malformations. 

CT Features: extra-axial lesion with smooth margin and pure fat density is consistent with the diagnosis of cerebellopontine (CPA) angle lipoma. 

MRI Features: Smooth margins extra-axial lesion with high signal on T1W and T2W images, with signal suppression on FLAIR and chemical shift artifact. The lesion shows a homogeneous signal, with artery and nerve encasement. The importance of the MRI is to determine the anatomical limits and the relationship with vascular structures and with the cranial nerves. A variation to the protocol could be made, adding T1 contrast fat sat sequences.  

Asymptomatic lipomas can be managed conservatively, but they may present slowly progressive focal signs, as they can infiltrate the cranial nerves, and partial resection may be needed.