Fig. 4From: Application of contrast-enhanced ultrasound in the diagnosis of tuberous vas deferens tuberculosisA 45-year-old male with tuberous vas deferens tuberculosis. A Routine ultrasonography showing a low-echo-type lesion (coarse arrow). B Contrast-enhanced ultrasonography showing heterogeneous enhancement with ring enhancement of a nodule (the small arrow shows a nodule-in-nodule) (Type IIc)Back to article page