There is now evidence that hydrosalpinx has a deleterious effect on fertility even if the mechanisms are still not completely clear. As suggested
by its name, hydrosalpinx occurs when the fallopian tube is blocked and is full of clear fluid, often as the result of infection or endometriosis. A hematosalpinx occurs when the tube is full of blood.
When both tubes are obliterated, infertility is obvious. When hydrosalpinx is unilateral, in theory pregnancy may be obtained but since the works of Strandell, it is now well known that the deleterious effect on hydrosalpinx on fertility is important.1 If in-vitro fertilization (IVF) is performed when hydrosalpinx is present the pregnancy rate decreases by a margin of almost 50%.