睾丸恶性肿瘤多发生在20—40岁之间,小儿睾丸恶性肿瘤较罕见。我院自71年至今只收治2例,因易误诊故入院时已属晚期。例1 男,3岁,发现右睾增大5个月,不疼。曾诊断为“睾丸鞘膜积液”,未治疗。近1月来,肿块明显增大。体检发育正常,营养中等。全身浅淋巴结不肿大,心肺正常,腹软,肝脾不大,未触及肿块。右睾肿大约3×3厘米,质硬,光滑,有沉重感, Testicular malignancies occur in the 20-40 years old, pediatric testicular cancer is rare. Our hospital since 71 years so far only received 2 cases, because of misdiagnosis so admitted to hospital already late. Example 1 male, 3 years old, found that the right testicle increased 5 months, no pain. Had diagnosed as “testicular hydrocele”, untreated. Nearly a month, the mass has increased significantly. Physical examination is normal, nutrition is medium. Systemic lymph nodes are not enlarged, normal heart and lung, abdominal soft, small spleen and liver, not touched the mass. Right tespi about 3 × 3 cm, hard, smooth, heavy feeling,