Patient's question:
What are the common causes of vas deferens blockage? Having been married for a long time, and my wife has never been pregnant. I went to the hospital for a thorough examination, and the doctor said it was caused by my vas deferens blockage. Hello, what are the reasons that cause vas deferens blockage?Doctor's answer:
According to your description, the sperm must pass through the remote attack of the seminiferous tubules, epididymal ducts, vas deferens, ejaculatory ducts, and part of the urethra to be expelled. Blockage in any of these areas can interfere with the expulsion of sperm. Unilateral obstruction of the vas deferens has little impact on fertility; however, bilateral obstruction prevents sperm from being expelled normally, leading to infertility. Obstruction of the vas deferens can cause obstructive azoospermia, also known as pseudo-azoospermia. Its clinical manifestations include normal-sized testicles, absence of sperm, normal levels of blood follicle-stimulating hormone (FSH) and testosterone, and normal results from testicular biopsy. The confirmation method for vas deferens obstruction is vasography, and a testicular biopsy should be performed before the vasography!