A: Metoprolol belongs to a class of medications called beta blockers, which are used to treat high blood pressure, angina, and congestive heart failure. The most common side effects are dizziness, lightheadedness, or slow heart rate.
Other symptoms of testicular cancer may include: 1  Testicular pain. 2  A sudden gathering of fluid in the scrotum. 3  An abdominal mass or abdominal pain.  Loss of weight or appetite; fatigue; lower- back pain; chest lumps, breathlessness and 1  cough. Infertility.
Testicular cancer is a disease in which malignant (cancer) cells form in the tissues of one or both testicles. Health history can affect the risk of testicular cancer. Signs and symptoms of testicular cancer include swelling or discomfort in the scrotum.