Fig. 12
From: Testicular tumours in children: an approach to diagnosis and management with pathologic correlation
Leydig cell tumour. A 7-year-old boy with precious puberty. High level of testosterone (3.762 ng/mL). a Transverse ultrasound view of the right testis shows a hypoechoic lesion (arrow). b Colour Doppler imaging demonstrates an increased tumour vascularization. A testis sparing surgery with tumour enucleation is practised. Leydig cell tumour is the definitive pathologic diagnosis