Epididymal cancer can be present in the early stages without noticeable symptoms, and the disease is not obvious enough to detect on its own. If an abnormal lump appears at the epididymis, it is recommended to seek medical treatment in time. Epididymal cancer is a malignant tumor that occurs in the area of epididymis, which is a relatively rare malignant tumor of the reproductive system. Most of the epididymal cancer patients only show the change of epididymal cancer size or hardening of epididymis in the early stage, and there may be no obvious symptoms. With the development of the disease, patients may have symptoms such as epididymal swelling, pain or lumbar pain, etc. However, these symptoms are not specific. However, these symptoms are not specific and cannot be used for self-detection of epididymal cancer. When patients have the above mentioned symptoms of epididymis, it is recommended to go to the hospital for urine routine, scrotal ultrasound, scrotal CT or scrotal magnetic resonance examination, etc. to make a clear diagnosis.