Medical statistics are relentless — about 15–20% of men face a condition known as varicocele. It is characterized by the pathological enlargement of the veins of the pampiniform plexus in the scrotum, caused by venous reflux and valve insufficiency. The condition may be asymptomatic and is often associated with male infertility. Varicocele is present in 40% of cases of primary infertility and up to 80% of cases of secondary infertility.
So, how long does it take for varicocele to lead to infertility? In fact, there is no definitive answer, but it is important to emphasize that it can remain unnoticed for years before later manifesting as difficulties with conception. Therefore, understanding the mechanisms behind varicocele development is essential for preserving fertility and ensuring timely intervention.
Why Does Varicocele Affect Fertility?
Varicocele can impair male reproductive function through various pathophysiological mechanisms, such as increased testicular temperature, oxidative stress and sperm DNA fragmentation, and changes in semen parameters.
Venous congestion causes a slight local increase in temperature. Although minimal — only a few degrees — it is enough to negatively affect the production of new male germ cells. In addition, the increased circulation of free radicals capable of damaging sperm DNA and lowering local testosterone levels leads to oxidative stress and DNA fragmentation, which also negatively impacts fertility.
Changes in semen parameters are a direct consequence of varicocele and may lead to infertility. In practice, varicocele can cause a decrease in sperm count, reduced motility, and impaired morphology. All these effects, especially when combined, reduce the ability to conceive. This often occurs when varicocele remains undiagnosed for a long time.
How Does Varicocele Progress?
The progression of infertility occurs slowly and variably. In fact, men may remain fertile for many years despite chronic varicocele present since adolescence. However, the risk of problems associated with declining sperm quality inevitably increases with age. Still, there is no reason to lose hope — solutions exist, and after the age of 40, surgical correction of this condition can increase the likelihood of spontaneous conception from 21% to 49%. These statistics confirm that male fertility can be preserved or restored even at a mature age.
Diagnosis and Assessment of Severity
The first step toward solving the problem is a visit to an andrologist at the Bogolyuby Medical Center and a clinical examination, including palpation of the venous plexus, which must be combined with a testicular ultrasound with color Doppler imaging. This is necessary not only to confirm the diagnosis but also to accurately assess the degree of venous reflux. A semen analysis should be performed to evaluate any damage to the reproductive system. Depending on the severity of the varicocele and changes in semen characteristics, a decision is made either to continue observation or to proceed with surgical intervention.
Varicocele: What Does Corrective Surgery Involve?
The gold standard for surgical treatment of varicocele is microsurgical varicocelectomy due to its effectiveness and low recurrence rate. After surgery, semen parameters usually improve within 3–6 months or within one to two cycles of spermatogenesis. This occurs in 60–80% of patients, leading to an increase in pregnancy rates up to 69% within two years after treatment.
However, it should be understood that restoring reproductive function is always an individual process. In the most severe cases or when significant semen abnormalities persist for more than 18 months, surgical intervention may not be advisable. In such situations, assisted reproductive technologies such as intrauterine insemination (IUI), in vitro fertilization (IVF), or intracytoplasmic sperm injection (ICSI) can help.
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