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A varicocele is an abnormal enlargement of the pampiniform venous plexus in the scrotum. This plexus of veins drains the testicles. The testicular blood vessels originate in the abdomen and course down through the inguinal canal as part of the spermatic cord on their way to the testis. Upward flow of blood in the veins is ensured by small one-way valves that prevent backflow. Defective valves, or compression of the vein by a nearby structure, can cause dilatation of the testicular veins near the testis, leading to the formation of a varicocele. Varicocele is known as one of the main causes for male infertility and can be treated by a surgery or non-surgical treatments. ==Signs and symptoms== Symptoms of a varicocele may include: * Visible or palpable (able to be felt) enlarged vein〔(Urologychannel: Varicoele ), retrieved October 21, 2006〕 * Dragging-like or aching pain within scrotum * Feeling of heaviness in the testicle(s) * Atrophy (shrinking) of the testicle(s) * Alteration of testosterone levels * Benign prostatic hyperplasia (BPH) and related urinary problems 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「varicocele」の詳細全文を読む スポンサード リンク
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