 Presenting Neuro Radiology Case 9. This was a 28-year-old male who came with left-sided headaches since one month and imbalance while walking. There was no history of trauma and on examination there was no focal neurological deficit. So an MRI of the brain was performed. These are T1 weighted axial images of the brain in the region of the posterior fossa which show that there is a round to oval lobulated lesion in the region of the right cp-angle system. It appears hyper intense on T1W images. These are axial T2 weighted images which show that the lesion also appears hyper intense on T2W images. It is causing mass effect over adjacent portion of the brainstem and cerebellar peduncles. The seventh aid nerves are seen to pass through the lesion in its intrasternal portion on thin T2W images. There is no extension of the lesion into the right internal auditory mediators and there is no widening of the IM. No restricted diffusion seen within the lesion. On left hand side these are Fatsat images which show that there is a complete signal drop within the lesion on Fatsat images and on post-contrast study no enhancement is seen within it. So considering these imaging findings this is likely to be a cp-angle lipoma. Lipomas are common elsewhere in the body but are rare in this location. So cp-angle lipomas account for about 0.15%. They are common in the supratentorial region mostly in the midline commonly seen in the region of the corpus callosum. The corpus callosum lipomas being common. These can cause slowly progressive neurological symptoms and signs due to affection of the adjacent cranial nerves or due to mass effect over the brainstem. The seventh aid nerves pass through the intrasternal portion of the lipoma and the intravestibular lesions can cause sensory neural hearing loss. On MRI these appear hyperintens on both T1 and T2W images and on Fatsat images they will show a complete signal drop. Also chemical shift artefact can be seen on cis or fiesta images and no enhancement is seen within the lipoma. On CT scan it will have a classical fat density. There are many lesions which are seen in the cp-angle system but few of them appear hyperintense on T1W images. Few of them are white epidermoid. This is a type of an epidermoid which usually appears hyperintense on T1W images due to its contents but these will show restricted diffusion on DW images unlike lipomas. In the cp-angle acoustic schwannomas are a common lesion but sometimes they may have hemorrhage within them and then they will appear hyperintense on T1W images. Though the entire lesion will not be hyperintense and have heterogeneous signal on T1 and T2W images. Another possibility is a dermoid but usually dermoids are midline and in addition to fat they have other components also. Thank you.