Intravasation of contrast medium was found in 28 women out of 450 women (6.25%) who underwent hysterosalpingography (HSG). Ten of these women had an otherwise normal uterine cavity and patent tubes. In six patients (66%) out of nine who underwent a repeated HSG within 2 months no intravasation was demonstrated. Seven of the 28 patients with intravasation (25%) of whom four were among the 10 patients with normal uterine cavity and patent tubes (40%) conceived and delivered later. It is concluded that in cases in which no other uterine pathology is demonstrated on HSG intravasation is not a persistent occurrence, and by itself does not affect the prognosis of fertility.