Ultrasounds of perinatal testicular torsion in two neonates

(A) Doppler flow ultrasound of a neonate with left perinatal testicular torsion. Note the lack of flow to the left testis (no color) and normal flow to the right testis. There is also a right hydrocele in the scrotal sac.
(B) Ultrasound of a neonate with right perinatal testicular torsion. The right testis has a heterogenous appearance on ultrasound and was found to be nonviable at the time of delayed right orchiectomy.