This study aims to evaluate how retroperitoneal lymph node dissection (RPLND), a surgical treatment for testicular cancer, may affect urinary and sexual functions in men. RPLND involves the removal of lymph nodes from the abdominal area and is sometimes necessary in patients who are not eligible for chemotherapy or who have residual disease after chemotherapy. While this surgery is known to carry a risk of affecting ejaculation, its potential impact on other areas such as urination or erection is not well understood. The study will prospectively follow adult men undergoing RPLND. It will assess changes in lower urinary tract symptoms, urine flow, ejaculation, erection, and overall quality of life before surgery and during follow-up visits up to 6 months after the operation. Patients will complete standardized questionnaires and undergo simple, non-invasive tests such as urine flow measurement. By identifying how RPLND may influence urinary and sexual health, this study seeks to improve understanding of the full range of effects of this treatment. The findings may help clinicians better inform patients before surgery and support improved post-operative care.