2Cortes D,Thorup J,Visfeld J.Multinucleated spermatogonia in cryp-torchid boys:a possible association with an increased risk of testicu-lar malignancy later in life[J] ? APMIS,2003,111:25-30
4Huyghe E, Matsuda T ,Thonneau P. Increasing incidence of testicular cancer worldwide :a review. J Urol,2003,170:5-11.
5Coupland CA. Chilvers CE, Davey G, et al. Risk factors for testicular germ cell tumours by histological tumour type. Br J Cancer. 1999,80 : 1859-1863.
6Kuo JY, Huang W J, Chiu AW, et al. Clinical experiences of germ cell tumor in cryptorchid testis. Kaohsiung J Med Sci,1999,15:32-37.
7Berkmen F, Alagol H. Germinal cell tumors of the testis in cryptorchids. J Exp Clin Cancer Bes, 1998,17:409-412.
8Cortes D,Thorup J,Visfeld J. Muhinucleated spermatogonia in cryptorehid boys:a possible association with an increased risk of testiculat malignancy later in life? APMIS,2003,111:25-30.
9Docimo SG,Silver RI, Cromie W. The undescended testicle: diagnosis and management. Am Fam Physician, 2000, 62: 2037-2044,2047 -2048.
10Cortes D, Thorup J, Visfeld J. Cryptorehidism : aspects of fertility and neoplasms. A study including data of 1,335 consecutive boys who underwent testicular biopsy simultaneously with surgery for cryptorchidism. Horm Res ,2001,55:21-27.
