How rare is congenital absence of the vas deferens?

Congenital bilateral absence of the vas deferens (CBAVD) is a rare obstructive anomaly that contributes to male factor infertility. The prevalence of CBAVD in the general population is approximately 1 in 1000, which accounts for most infertile males with cystic fibrosis and 1–2% of all infertile males.

Can you be born without a vas deferens?

Disease at a Glance Congenital bilateral absence of the vas deferens (CBAVD) occurs in males when the tubes that carry sperm out of the testes (vas deferens) fail to develop properly. Although the testes usually develop and function normally, sperm cannot be transported through the vas deferens to become part of semen.

How is congenital bilateral absence of the vas deferens diagnosed?

Low volume semen analyses or ejaculates with a pH of < 7.2 should lead one to suspect congenital absence of the vas deferens, or in the presence of palpable vasa, partial absence or ejaculatory duct obstruction (EDO) and a transrectal ultrasound should be performed for diagnosis.

What is the disease of vas deferens?

Congenital bilateral absence of the vas deferens (CBAVD; MIM ∗277180) is a post-testicular disease characterized by the absence of the scrotal vasa, which results in a blockade of the transport of the spermatozoa from the testis or the epididymis to the distal genital tract.

What would happen if the vas deferens was blocked?

In some men, the epididymis becomes blocked, preventing sperm from entering the vas deferens and getting into the ejaculate. A blockage can occur on one side or on both sides. If a man has an epididymal obstruction on one side, he may suffer a lowered sperm count.

What happens if you have no vas deferens?

Therefore, those who are missing both vas deferens are typically able to create sperm but are unable to transport them appropriately. Their semen does not contain sperm, a condition known as azoospermia. Unilateral absence may not show any abnormalities in semen analysis.

Does Oligospermia cause infertility?

How does oligospermia affect fertility? Some men with oligospermia can still conceive despite lower sperm counts. Fertilization may be more difficult, however. It may take more attempts than couples without a fertility issue.

What causes blocked vas deferens?

Vasectomy is the most common cause of obstruction in the vas deferens. Severe genital or urinary infections, injury during scrotal or inguinal surgery and birth defects are other common causes of obstructive azoospermia.

Can vas deferens be repaired?

Overview. Vasectomy reversal is surgery to undo a vasectomy. During the procedure, a surgeon reconnects each tube (vas deferens) that carries sperm from a testicle into the semen. After a successful vasectomy reversal, sperm are again present in the semen, and you may be able to get your partner pregnant.

Can oligospermia be corrected?

If varicocele or vasectomy is the reason for oligospermia, then it can be easily corrected or reversed through a surgery. With proper medications and hormone treatments, the sperm count can be increased in some cases.

What is the best treatment for oligospermia?

How is oligospermia treated?

  • You may need surgery to treat a varicocele or blocked sperm ducts.
  • Your provider may prescribe hormone supplements.
  • Your provider may prescribe antibiotics for infections.
  • Your provider may suggest counseling to deal with issues like erectile dysfunction or premature ejaculation.

How is blocked vas deferens treated?

Vasovasostomy. This is a surgical procedure which removes the blockage and connects both the sides of the vas deferens.