In connection with gynaecological diseases and/or their therapy, genital fistulas constitute a grave complication. Accurate representation of these fistulas in conjunction with the adjacent hollow organs is of curcial importance for their successful removal. A modified kind of wick urethrocystocolporectography, which is a method that has proved efficient in cases of a dislocation in the female genital tract and also in cases of insufficiency of locking of the urinary bladder, provides these preconditions for an efficient therapy. That is, through the difference in the course of motion during holding and pressing in comparison with rest there are detected not only any valve mechanisms present but also dislocations, if any. Moreover, the method, easy to apply as it is and involving only little strain, provides an advantage which cannot be overlooked.