If men touch the testicles in egg-like size, this is not normal at this time, and patients are advised to go to the hospital for scrotal color ultrasound examination in a timely manner. Localized testicular enlargement is mainly seen in unilateral testicular syringomyelia, in the color ultrasound examination will find a liquid echo dark area, can confirm the diagnosis of testicular syringomyelia. Testicular torsion is also possible, in which the ultrasound examination reveals a significant decrease in blood flow to the testicle, while the patient will have symptoms of pain in the testicle lifting on one side, which tends to occur at night when the teenager is asleep. When testicular cancer occurs in older men, the testicle will be enlarged, and at the same time, the testicle will be hard when touching it, and there is no any early obvious symptom. Therefore, when the testicle is enlarged, such as the size of egg, you should go to the hospital for examination in time to exclude it is caused by lesions.