Purpose : To evaluate the diagnostic value of MRI, we compared MR images of primary scalp mass withpathological findings. Material & Methods : Eight cases in seven patients who had presented primary scalp massduring the previous three years were evaluated by MRI and confirmed with surgical excision and pathologicevaluation. 0.38T(Resonex 4000, USA) MRI was used and all MR images were analysed retrospectively. Results : Eightpathologically confirmed cases consisted of three cases of epidermal cysts, one of steatocystoma simplex, three ofneurofibromatosis and one of lymphangioma. All epidermal cysts were located in the occipital area and showed ahigher signal intensity than CSF in T1WI, and proton density and variable signal intensity in T2WI. TheSteatocystoma showed a signal iniensity similar to fat in T1WI and proton density and a lower signal intensitythan fat in T2WI. Neurofibromatosis accounted for three cases in two neurofibromatosis patients ; one was locatedin the right parieto-occipital area and accompanied by hematoma and skull defect ; two cases were located in theoccipital and posterior cervical area of the same patient. The masses showed a higher signal intensity than musclein T1WI and hyper or isointensity in T2WI with well enhancement. The lymphangioma showed a signal intensitysimilar to CSF in all pulse sequences and contained a fat component. Conclusion : Conclusion : MRI is a usefulmodality for evaluating primary scalp mass.