An arteriovenous malformation may rarely involve the male genital system.
The usual sites of an arteriovenous malformation are the scrotum and penis.
Typical findings:
(1) a reddish-bluish-purplish skin or subcutaneous lesion
(2) hemorrhage, especially after trauma, including hematuria from a urethral lesion
Angiography can demonstrate the tangle of blood vessels.
Differential diagnosis:
(1) benign vascular tumor (hemangioma)
(2) malignant vascular tumor (angiosarcoma)
(3) acquired arteriovenous fistula
(4) variocele (varicose veins)
Therapy may include embolization, laser therapy or surgical excision.
