Uses of ultrasonography:
(1) To confirm the diagnosis by demonstrating a tear in the tunica albuginea of the corpus cavernosum.
(2) To determine the location and severity of the tear, which may be obscured by hematoma or swelling.
(3) To provide guidance to the surgeon on how best to surgically approach the injury.
(4) To detect any underlying condition that may have predisposed the penis to fracture.
(5) To monitor a patient managed medically to document resolution over time.
Advantages over corpus cavernosography:
(1) Avoids the need for an iodinated contrast agent, which may cause an allergic reaction.
(2) Noninvasive with no risk of infection.
(3) Cavernosography may be complicated by priapism.
Limitations:
• A small tear may not be detected (false negative).
• Operator inexperience or error (false negative or positive results).
