A nurse is providing teaching to a client who has a new diagnosis of testicular cancer. Which of the following information should the nurse include in the teaching? (Select all that apply.)

Rationale: A. Testicular cancer most commonly affects younger men between 15 and 35 years old. This age group should be encouraged to perform monthly testicular self-examinations for early detection. B. The most common early sign of testicular cancer is a painless lump or swelling in one testicle. Pain usually occurs only in later stages or if bleeding or inflammation develops within the tumor. C. The diagnosis itself does not cause infertility. However, chemotherapy, radiation, or surgery may impair fertility. Clients are often advised to bank sperm before treatment begins. D. Testicular cancer is typically unilateral, affecting only one testicle. Bilateral cases are rare but possible. E. Having a first-degree relative (father or brother) with testicular cancer increases risk, suggesting a genetic predisposition.