Hysterosalpingogram X-ray of the pelvis of a 27 year old woman showing her uterus (womb, white irregular triangle) and fallopian tubes (extending from top left and right of uterus). The uterus is shifted towards the left (right here), causing the left fallopian tube to become folded. A hysterosalpingogram is taken after the introduction of a radio-opaque material to the uterus via a catheter (tube at bottom centre) in the vagina.