A graduate of the Poznan University of Medical Science, under the patronage of Karol Marcinkowski, where he had also defended his doctoral dissertation. He has also completed specialized courses in the Berlin Unfall-Krankenhaus, in the Klinik für Urologie in Neuro – Urologie and the Universitätsklinik fur Urologie und Andrology in Salzburg, Austria , as well as internships and courses in Italy and the United States. A specialist in the field of urology, sexology and surgery. His special medical interests concern uroonkology , or cancer of the urinary system, neurourology and urodynamics (dysfunction of the lower urinary tract, overactive bladder, urinary incontinence), endourology , namely modern operating methods using endoscopic and minimally invasive techniques, sexology (potency disorders, premature ejaculation, hormonal therapy in the androgen deficiency syndrome, penis diseases). Roland Dadej is a member of the Polish Association of Urology (PTU), the European Association of Urology (EAU ), the European Board of Urology (EBU) and the Polish Society for Sexual Medicine (PTMS).