After a quick research I believe that the Specialized Hospital PRO-FAMILIA in Rzeszów may be the best choice for you.
From an article from a medical specialized source:
Research and Development Center of non-invasive therapeutic methods, operating in the Specialist Hospital Pro-Familia in Rzeszow, as the first, and so far the only place in Poland (as at November 2014), which has the innovative method of treatment of uterine fibroids - Ultrasonic thermoablation.
And the PRO-FAMILIA page about this treatment:
rzeszow.pro-familia.pl/en/fibroids-treatment