Normal size of testicular tumor can be 1cm to 10cm, and various sizes of testicular tumors can occur. Normal testicles are movable, slightly cool, and about similar in size between left and right. If you find a clear increase in testicles on one side, it is recommended to go to the hospital in time so as not to delay the normal treatment. With the development of medical technology, the survival period of testicular tumor is mostly 20 to 132 months, and the median survival period is 42 months. There is a substantial increase in the survival period compared with the previous one. The severity of testicular tumors is not directly related to the size of the tumor. If abnormalities are found in the testicles, especially in young boys, it is recommended to seek medical treatment in time, and often testicular tumors in young boys are more serious.