Hi and thanks for the query, Testicular masses in males usually deserve to be evaluated, because testicular tumours are very frequent. Once detected earlier enough, a better and exact diagnosis improves outcome. Its very important to do a thorough evaluation. Testicular tumours could explain the erectile problems you are experiencing to an extent. Testicular cysts, which are fluid collections in the testes could also present themselves as palpable masses. Hydrocoeles and Varicocoeles are also important diagnostic possibilities. Its very important to carry out specific blood tests, especially Beta HCG levels, testicular ultrasound and a chest X ray, which is one of the commonest sites of spread, in case its a tumour. Alha feto protein levels and Lactate Degydrogenase levels are part of the tests required. My suggestion is your book an appointment with a urologist for a proper evaluation and management. Thanks and best regards hoping this helps, Luchuo, MD.