Growth-arrest and inhomogenous echotexture of the affected testis after tumor enucleation for unilateral Leydig cell tumor.

The authors report on an 8-year-old boy with unilateral left-sided Leydig cell tumor. After enucleation of the tumor, endocrine disturbances resolved. Long-time follow-up for more than 7 years was characterized by growth-arrest of the affected gonad and the unchanged appearance of a circumscribed hypoechogenic residual lesion within the testis.