Hi Pat,<br>I'm no expert, but I don't think they are the same.<br><br>I think in polycystic ovaries, the cysts are under-developed follicles. In a normal monthly cycle, one follicle would grow larger and larger until it is mature, then release an egg, then disappear. In PCOS, a follicle develops to a certain point, but don't mature enough to release an egg, so don't shrink. So then there is no trigger to have a period, lining stays thick etc, and another follicle begins to grow , doesn't get big enough, stays, etc.<br><br>I don't know much at all about fibroids, but I THINK they're in the womb rather than in the ovaries. I believe they can cause heavy periods. PCOS can too - because it messes up your cycle and you often go months without an AF, only for it to be mega when it arrives (I speak from experience here!)<br><br>Hope this helps - anyone else, feel free to correct me if I'm talking drivel! <br><br>Beck x