[A new study method: the perineal scan in obstetrics and gynecology].

For gynecological/obstetrical ultrasound examination the abdominal wall constituted the first and for a long time the only acoustical window that could be used to visualize the female reproductive organs. Only recently transvaginal/transrectal endosonography has opened new approaches in this diagnostic field. Apart from the above-mentioned procedures, the female perineum can be regarded as a useful window to demonstrate the cervix uteri, the bladder and the urethra. At the Universitäts-Frauenklinik Heidelberg this examination procedure was used since June, 1985, to evaluate its clinical reliability in obstetrics and gynecology.