hysterosalpingogram /his′tərō′salping″gōgram′/ [Gk, hystera + salpinx, tube, gramma, record] , an x-ray image of the uterus and the fallopian tubes using gas or a radiopaque substance introduced through the cervix to allow visualization of the cavity of the uterus and the passageway of the tubes. A blockage of a structure is demonstrated on the film because the radiopaque substance cannot pass to the more distal structures and escape from the ends of the tubes into the peritoneal cavity. Serial hysterosalpingography is useful in the diagnosis of the cause of infertility.
