Figure 1
(a) B-mode sonography of the left testis shows an intratesticular mass with concentric rings of alternating echogenicity with a more echogenic central core. (b) Color Doppler sonography shows the absence of a vascular signal within the mass and a more echogenic central core (arrowhead).
Figure 2
Ultrasonography of the right hemiscrotum shows a mild hydrocele and an extratesticular intrascrotal mass with concentric rings of alternating echogenicity. Note the hyperechogenic central core (arrowhead).
Video 1
Ultrasound video of a right hemiscrotum extratesticular lesion showing characteristic “onion ring” appearance with a mild hydrocele.