[Peroperative colposcopic examination of conization tissue. Determination of the complete or incomplete nature of the cone].

The authors describe an original technique which makes it possible for them to determine during the operation whether conisation has been complete or incomplete. The tissue removed is examined during the operation colposcopically after it has been stained with an aqueous solution of toluidine colour blue. Pathological epithelium can be recognized easily and it is possible to measure the distance between the edge of this epithelium and the tissue that has been removed. If it is inadequate more can be cut out immediately. The distance should be at least 5 mm from the edge of the pathological epithelium.