Hypemephroma comprises about 85-90% of renal malignancy in adults. The natural course of hypemephroma is very diverse and unpredictable from abrupt explosive growth with wide spread metastasis to asymptomtic slow growth for several years. Reports from aliens indicated that hypernephroma with hisgopathological papillary growth pattern has better prognosis and more frequently hypovascular on renal angiography and less echogenic on ultrasonography than non-papillary hypernephroma. Reviewed here retrospectively all the patients who were admitted and diagnosed as hypemephroma histopathologically at the Severance Hospital from March, 1973 through september, 1984, in respective of angiographic vascularity, ultrasonographic echogenicity, histopathologic cell type and growth pattern, and following results were obtained. 1. The incidience of calcification in hypemephroma was 7 cases out of 53 cases (13%). The incidence of hypemephroma according to cell type was clear cell type 20 cases 56%), mixed cell type 11 cases (31%), granular cell type 4 cases (11%), sarcomatous cell type 1 case (2%). The incidence of hypemephroma according to growth pattern was papillary growth pattern 13 cases (45%) and non-papillary growth pattern 17 cases (55%). 2. Renal angiographically, hypervascular hypemephroma was 19 cases(73%), hypovascular hypemephromas was 6 cases (23%0, all of which showed abnomal marginal vessels. 3. Angiographically hypervascular hypemephroma had high incidence of predominantly high echogenicity and angiographically hypovascular hypemephroma had high incidence of predominantly low echogenicity. 4. Clear cell type hypemephroma had high incidence of predominantly low echogenicity on ultrasonography. 5. Predominantly low echogenic hypernephroma had high incidence of papillary growth pattern and predominantly high echogenic hypernephroma had high incidence of non-papillary growth pattern. In summary, clear cell type hypernephroma had high incidence of hypovasculari y angiographically and hypovascularity on angiography was correlated with predominantly low echogenicity on ultrasonography, and predominantly low echogenicity had high incidence of papillary hypernephroma which was reported to have more good prognosis than non-papillary hypernephroma. So, it can be suggested that if a hypernephroma show hypovascularity on angiography or predominantly low echogenicity on ultrasonography, it has a good prognosis than hypervascular or predominantly high echogenic hypernephroma.