To investigate whether growth, invasion and metastasis of endometrial cancer cells is associated with neovascularization, the expressions of fibroblast growth factor-1 (acidic FGF), -2 (basic FGF) and -4 (hst-1) mRNAs and FGF-2 in endometrial cancers and normal endometria as controls were determined by reverse transcription-polymerase chain reaction-Southern blot and ELISA, respectively, and the relationships between their expressions and histological grades, grades of myometrial invasion or clinical stages of endometrial cancers were analyzed.