Scrotal Ultrasound.

Ultrasound is the imaging modality of choice to evaluate the scrotum because of its high resolution, Doppler capabilities, availability, and lack of ionizing radiation. Acute urologic emergencies diagnosed with ultrasound include testicular torsion, testicular rupture, and Fournier gangrene. The radiologist's knowledge of sonographic features of vascular, infectious, traumatic, and benign and malignant processes that occur in the scrotum coupled with the patient's presenting symptoms, age, and physical examination allows for the correct diagnosis of a wide spectrum of scrotal pathology.