Pedunculated fibroids, attached to the exterior of the uterus, have not been shown to have any adverse effects on fertility. This class of particular fibroids are connected to the surface of the uterus by a narrow stalk or stem. The adverse effect on fertility is in-creased when the fibroids are located in the muscular wall of the uterus or within the cavity or inner chamber of the uterus.
Subserosal fibroids, which are generally located just beneath the outer covering of the uterus, have very little adverse affect on fertility, unless they are located close enough to the fallopian tube to cause compression and blockage.