Transcatheter embolization was done in 15 patients wtih various diseases at departement of radiology, SeoulNational University Hospital from Sept. 1978 to July 1983 using absolute ethanol, autologous blood clots andgelfoam particles as embolic agents. The results were as follows; 1. Successful embolizations were done in 14 of15 cses. (Success rate:93%). 2. Most of complication was post-embolization syndrome such as fever, nausea, painbut minimal. Serious complicaiton was very little. 3. Transcatheter embolization appears to be highly valuableadjuvant therapy in debulking of preoperative and inoperable hypervascular mass or treatment of bleeding fromvarious etiology.