There is no special limit in size, but if the upper edge of the fibroid is too high, the range of treatment needs to be further evaluated by a physician/doctor after examination. Generally, if the fibroid partially locates beyond the pelvic cavity, the part below the fibroid will be treated first, and then the need for re-treatment will be evaluated after a few months. If the symptoms have improved significantly, most of them do not need to be retreated. The details of the condition still need to be examined and explained by your doctor.