Craniopharyngioma is one of the most common brain tumor in childhood, along with astrocytoma and cerebellarmedulloblastoma, It is an interesting tumor not only for its peculiar embryological and clinical aspect but also for its great tendency to calcify. Precise recognition of location, size, and surrounding tissue invasion of the tumor is mandatory in surgical treatment. During 5 years from Oct. 1973 to July, 1978. 11 cases of histopathologically proven craniopharyngioma at Seoul National Unviersity are analyzed. The resus are as follows;1. 9 cases are under age of 25 and male to female ratio is 1:1.7. 2. Headache and/or vomitting are found in 10 cases (91%), visual disturbance in 9(82%), antierior pituitary insufficiency in 6(55%), hypothalamic dysfunctionin 4(36%), epileptic seizure in 3(27%), and diabetes insipidus in 2(18%). 3. Tumor calcification is seen in 10cases (91%), sella turcica change in 8(73%), suture seperation in 4(36%), and increased convolutional marking in1(9%). 4. In cases of anterior and suprasellar extension, supraclinoid portion of internal carotid, artery and horizontal portion of anterior cerebral artery are the most valuable landmarks and in retrosuprasellar extension, stretching and posterior desplacement of thalamoperforate artery are the most sensitive and accurate indicator. 5.8 cases (73%) are intra-and suprasellar location and 3(27%) are in supra-and parasellar. 6. Directions of thetumor mass extension are toward anterior suprasellar region in 3 cases (27%), direct suprasellar in 10(91%), posterior suprasellar in 4(36%) and middle cranial fossa in 1(9%).