Testicular cancer is a kind of malignant tumor disease, the incidence of which is gradually increasing and getting more and more attention. In order to better detect and treat the disease, we must understand the symptoms of testicular cancer, which can help us make diagnosis in advance and play a good role in our body. 1.Acute testicular pain One day, the testicle on the sick side suddenly has severe pain, just like a testicular torsion lesion, which is caused by sudden hemorrhage, embolism and ischemic necrosis of testicular tumor tissue. 2.Infertility Testicular tumor will destroy the sperm production mechanism in the testicles, which will cause infertility. Testicular heaviness Because testicular tumor is a substantial lump formed by the massive growth of tumor cells, after growing to a certain extent, the weight of testicles will suddenly increase, and patients will have a heavy downward feeling, even affecting walking. If you hold up the testicle with your hand, it is like holding a stone, and there is a certain sense of weight. 4, testicular enlargement This kind of enlargement is mostly found unintentionally when bathing or changing clothes, or it happens to be mildly injured by some kind of impact on the scrotum and is found when performing local stroking. Most of the swollen testicles are not accompanied by pain, and local pressure is not painful. Occasionally, there may be vague pain, but there is always a feeling of swelling in the testicles in the scrotum. 5.Acute abdominal pain Testicular tumor in higher position can reflexively cause lower abdominal pain due to pulling the nerve by dropping downward. Especially for the cryptorchid located in the abdominal cavity, in case of malignant transformation and testicular torsion, the acute abdominal pain is very strong. 6.Hard testicle The testicle is hard and hard to the touch, which is significantly different from the common testicle inflammation where the testicle is uniformly swollen and the texture is not hard. 7, gynecomastia inexplicable breast enlargement, but also testicular tumors, such as embryonic cancer, choriocarcinoma, teratocarcinoma and other tumors, itself will produce a large number of gonadotropins, the body of such hormones increase, can stimulate breast enlargement.