[Contact hysteroscopic exploration of the uterine cavity]

The contact hysteroscope gives a clear view only upon contact with the observed surface. There are 6mm and 8mm diameter models. A total of 172 contact hysteroscopic examinations were performed to view the uterine cavity. The following results were obtained: After the previous observation with the panoramic hysteroscope, the rate of correct diagnosis with the 6mm model was 83.3% and that with the 8mm one was 98.5%. The rate of correct diagnosis with the 8mm model was 85.3% and that with the 6mm one was 92.7%, when used initially. The main disadvantages of the contact hysteroscope were a lack of perspective view and occasional existence of a dead angle just above the internal os. Among the contact hysteroscopic diagnosis, that of endometrial polyp was the most difficult, followed by those of slightly bulging submucous myoma and endometrial hyperplasia, while diagnosis of IUD, hydatidiform mole and endometrial carcinoma were easier. After acquiring the necessary experience, the 6mm model also gave very accurate results, requiring no cervical dilatation in multiparous cases. The 6mm model should therefore be a useful instrument to use in outpatient diagnosis.