Figure 11.

Para-testicular dermoid cyst in a 6-year-old boy. Longitudinal (a) gray-scale B-mode and transverse color Doppler (b) US of the scrotum. Images show an extra-testicular lesion (blue arrow) at the lower pole of the testis (star), demonstrating well-circumscribed margins, homogeneous echoic content with acoustic posterior reinforcement (arrow) without internal vessels on color Doppler images. Serum levels of tumor markers were normal, and the lesion was removed by an inguinal approach. US, ultrasonography.