The testicles are one of the most important reproductive organs in men, responsible for the production and storage of sperm, as well as the important task of producing androgenic hormones. According to statistics, testicular cancer occurs in about 7 out of 100,000 men, mostly in young men between the ages of 20 and 39. The cause of testicular cancer is not yet clear, but those who suffer from cryptorchidism are considered to have a higher chance of developing testicular cancer! If testicular abnormalities occur, it is important to consult a doctor as soon as possible to avoid regret! Adult men have two testicles, one on the left and one on the right, about the size of a golf ball. The normal testicles will fall into the scrotum after birth and are covered by the scrotum; if the testicles do not fall into the normal position, it is called cryptorchidism and should be treated as soon as possible to avoid damage to the sperm production ability. When the testicles become diseased, the initial symptoms are not obvious, and it is common for patients to feel an abnormal lump in the shower or during a health check. It is recommended that men should develop the habit of self-examination every month from a young age, when examining the scrotum with one hand, the other rolling to touch the surface and shape of the testicles, if the following symptoms should be alerted! 1, unknown lumps: testicles have an unknown lump, the initial pressure may not be obvious pain, but will gradually become larger. 2.Irregular shape: The shape of malignant tumor is usually irregular, which may cause a particular side of the testicle to protrude. 3.Hard to touch: When touching the testicle, the tumor is as hard as a stone, and there is no normal elasticity when pressed, and there is no obvious pain. 4.Heavy sensation of falling: You may feel a heavy feeling of falling in the scrotum or a pulling sensation in the lower abdomen, and a mild pain may occur when standing for a long time or when you are tired.