 My topic for paper presentation is MRI evaluation of epidermoid cysts in various locations. Introduction intra-killer epidermoid cysts are uncommon congenital lesion, which account for about 1 percent of all intracranial tumors. They result from inclusion of actroderma elements during neuro tube closure, typically present in middle age, 20 to 40 years due to mass effect on adjacent structures. They are contained right from discriminated epithelial cells, Mimic CSF on CT as well as on MRI. With the exception of DWI, IEV demonstrates a stated diffusion, usually very slow growing and as sustained many years to present. An uncommon association exists with anorectoanomaly, sacroanomaly, and perisacral mass, which is called as the curianum triad. Location intra-dural 90 percent, CT angle 40 to 50 percent, supracilat 10 to 15 percent, port ventricles 17 percent, intramasferic is less than 5 percent and spinal is very low. Extradunality is 10 percent most within the skull. Ames and objective aims to study the role of MRI in evaluation of epidermoid cysts in various locations. Objectives, evaluation of epidermoid cysts in various locations on MRI. Method, there is a retrospective study done on RMC as hospital virally over a period of one year from March 2023 to February 2024, a total of 20 patients were included in this study. The patient ages range from two years to 80 years, ovations were scanned under Siemens 1.5-tascline MRI machine. Diagnose bars based on the typical MR appearance, location, and attending associated features. Case one, there is a relatively well-defined multilow related T2 hyper intense lesion in the right CP angle. System, showing suppression on the T2 flare axial image, and there is a restricted diffusion on DWI as well as on ADC. Without any post contrast enhancement, this lesion is projected into the right AISC without causing binding of the same. The right 5th, 7th, and 8th nerves are displaced posteriorly. Case two, T2 axial image in a very well-defined low-related mass lesion appears mildly hyper intense on TWI and is noted in the fourth ventricle. The mass lesion showing suppression on the flare image and diffusion restriction on the DWI as well as on the ADC. There is no obvious contrast enhancement. The lesion is causing significant mass effect and compression of the brainstem by later, later ventricle, third ventricle, as well as fourth ventricle appear markedly dilated with CSF closing in the perivate region. Suggestive of obstructive hydrocele, as well as there is a tonsillar herniation, which is shown this T2 sagittal image. Case three, there is a large-doubleted T2 hyper intense mass lesion, showing restricted diffusion on DWI and on ADC within the lumbosecral spinal canal from L2 to S2 vertebral level. The mass is closing, is sloping of the posterior vertebral cortex and compression of the coda equinox, zetting nerve roots. On T2 sagittal image, there is no suppression of this lesion. Case number four, there is a relatively well-defined low-related mass, extra axial mass lesion is seen in the left frontal lesion in parasagittal location. The lesion is a hyper intense on the T2 showing partial suppression on T2 flare image. On DWI, there is a diffusion restriction as well as there is a diffusion on ADC. The lesion is on post-contrast and there is no obvious post-contrast enhancement. Locations of epidermal axis, number of cases. On CP angle, there are eight cases, intraventura, three cases, spinal, two cases, intra-mastric, two cases, supra-cell-assistant, four cases. Intra-care barrier, one, there are total 20 cases discussed. Epidermal axis are often indistinguishable from eryconoid cysts or dilated CSF spaces. On many MR images, except for DWI, ADC, which help to differentiate them. They appear isointest to CSF on T1 weighted image with higher signal compared to CSF after the pre-holtal lesion. On T2, they usually appear isointest to CSF and slightly higher intense to gray meter. On flare, they often show hydrogenous dirty signal with signal intensity higher than CSF. They appear very bright on DWI with similar ADC values compared to adjacent brain with parenchyma. The features are usually for differentiation from eryconoid cysts. They usually do not show font size enhancement, but seen enhancement around the periphery may seem sometimes. Conclusion, epidermal axis are usually very rare, benign, and it is seen in less than 1% of cases. MRI is the modality for choice for diagnosis, and it shows distinct features like diffusion distinctions, which can help differentiate epidermal axis from other differentials like eryconoid cysts. Also, it can be noted that they can be found in various locations in the CNS. References for my paper. Thank you.