The diagnosis of malignant tumors in the region of the female pelvis is very difficult to make so far. The authors present in this paper their first experiences in simultaneous use of ultrasound and computed tomography for detecting malignant uterine and ovarian tumors. Relationship between ultrasound and computed tomography is then evaluated on the basis of own experience. Indications for a CT examination in the pelvic region based on previous ultrasound examination are defined.