Falsely negative hysterosalpingographical (HSG) finding presents regular HSG finding, but the laparoscopical is pathological alterations. Falsely positive HSG findings presents pathological HSG finding, but the laparoscopical is regular finding. A high frequency of falsely negative results can be explained first of all by the presence of growths of tissue. It is known that by HSG peritubar adhesions can be suspected, but they can be diagnosed with absolute certainty only laparotomically and laparoscopically. In the period from 01.01. untill 31.12.1998. the falsely negative and falsely positive HSG findings were identified on 60 patients, which were tested by HSG method and laparoscopy. Obtained results are showed ta2 bular and graphically. Statistical data processing is carried out by Mc Nemar test (c MCN test). In the case of the HSG pathological finding, the same pathological finding has been proved in 28 (63,6%) persons, a different pathological finding in 9 (20,5%) and regular finding in 7 (15,9%). The frequency of falsely negative HSG findins is 25,0% and falsely positive HSG findings 15,9%. The frequency of falsely positive findings extends from 14,6%, 17%, 20% to 29,6%. The majority of authors state that the incidence of falsely negative findings ranges from 15,5%, 15,9%, 18%, 20,7%, 22% to 24,0%. The pathological HSG points out to the necessity of laparoscopy, while the regular HSG is not sufficient proof of normal oviducts and the peritoneal factor

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