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.
1 Testicular cancer. 2  Testicular cancer is a tumor containing abnormal testicular tissue, which can usually be felt as a lump in the scrotum. 3  Although most tumors don't cause other symptoms, some men experience pain or swelling. 4  Spermatocele.