What is the normal appearance of the female genital tract on a hysterosalpingogram?
The uterine cavity has the shape of an inverted triangle. The fallopian tubes originate from the upper lateral aspects of the uterine fundus, and contrast material injected into the uterine cavity opacifies the tubes and then spills into the peritoneal cavity. The cornual portions of the tubes originate from the uterus and lead to the isthmic segments, which are thin and muscular portions of the tubes. The ampullary segments are wide portions of the tubes with mucosal folds, while the fimbriated ends of the tubes overlie the ovaries but are not visualized distinctly on hysterosalpingography (HSG)