Testicular cancer is the most common malignancy in young men between the ages of 20 and 44. In order not to scare you, let’s say the good things from the beginning. It is the cancer with the best prognosis, i.e. most of the time curable with only surgery. Chemotherapy will rarely be needed if it is naturally diagnosed early. Men can father children and after the operation sometimes their sperm can be preserved as a precaution. It has nothing to do with sports, as you will often hear from uninformed sources. There is a family burden eg if the father or brother had it and cryptorchidism at an early age. What do we advise you? Once a month examine your testicles. Look for a change in size, calluses and pain, a feeling of heaviness, and small lumps/lumps. Use your thumb, index and middle finger and check the entire area. Then look in the mirror for changes. For any change, visit the specialist immediately.