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15～34岁男性最常见的肿瘤是睾丸肿瘤。在睾丸肿瘤患者中儿童患者70%为生殖性肿瘤(精原细胞瘤极少),30%为非生殖性肿瘤。50岁以上患者,55%为生殖性肿瘤,45%为非生殖性肿瘤。隐睾和睾丸萎缩患者的肿瘤发病率比正常人增高8倍。8%的睾丸肿瘤的癌前病变是睾丸萎缩。5%的睾丸肿瘤来自隐睾,即使1～2岁时用药物或手术矫正了隐睾,仍有恶变危险。此外,约8%的睾丸肿瘤表现类似副睾炎;7%睾丸肿瘤表现为症状性鞘膜积液,均需做特殊检查。
The most common tumor in men between the ages of 15 and 34 is a testicular tumor. In pediatric patients with testicular tumors, 70% of children are reproductive tumors (very few seminomas) and 30% are non-reproductive. In patients over the age of 50, 55% are reproductive tumors and 45% are non-reproductive. The incidence of tumors in patients with cryptorchidism and testicular atrophy increased by 8 times compared with normal subjects. Precancerous lesions of 8% of testicular tumors are testicular atrophy. 5% of the testicular tumors are from cryptorchidism. Even if the cryptorchidism was corrected with drugs or surgery at the age of 1 to 2 years, there is still a risk of malignant transformation. In addition, about 8% of testicular tumors behave similarly to epididymitis; 7% of testicular tumors present with symptomatic hydrocele, all of which require special examinations.