Trying to conceive is a path that, for many couples, can be thwarted by unexpected difficulties. When pregnancy fails after a year of trying, both partners undergo a medical evaluation. For men, a semen analysis, or spermiogram, is a crucial test.
One of the most shocking diagnoses a parent can receive is azoospermia, a condition that, while a significant challenge, doesn't always mean the end of the dream of parenthood. In this article, we'll analyze everything about this condition, clearing up any doubts and offering a hopeful outlook thanks to the medical advances available today.
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What is azoospermia?
It is defined as the complete absence of sperm in the ejaculate. It is important to emphasize that this does not necessarily mean that the man does not produce sperm, but rather that they are not expelled during ejaculation. This is the most severe cause of male infertility, representing between 10% and 15% of cases. However, contrary to what one might initially think, a diagnosis of azoospermia is not synonymous with absolute infertility. In a considerable percentage of cases, it is possible to retrieve sperm directly from the testicles or epididymis for use in assisted reproduction techniques.
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Obstructive azoospermia (OA)
In this type, sperm production in the testicles is normal, but there is a physical obstruction in the ducts through which they must travel to be ejaculated (vas deferens, epididymis). The blockage prevents sperm from reaching the semen. It accounts for approximately 40% of azoospermia cases. The most common cause is intentional vasectomy, but it can also be due to previous infections, congenital absence of the vas deferens (frequently associated with cystic fibrosis), or trauma.
Non-obstructive azoospermia (ANO)
Here, the problem lies in a failure of sperm production within the testicles. The ducts are free, but the seminiferous tubules (the seminiferous tubules) do not function properly or function very poorly. This is the most severe form and accounts for 60% of cases. The causes are diverse and include genetic disorders, hormonal problems (hypogonadism), cryptorchidism (undescended testicles), treatments such as chemotherapy or radiation therapy, or severe varicocele.
Secretory vs. excretory azoospermia
This is another way of referring to the two previous types. Secretory azoospermia is synonymous with non-obstructive azoospermia (failure of secretion/production), while excretory azoospermia is equivalent to obstructive azoospermia (failure of excretion/transport).
Causes
Causes of obstructive azoospermia
Vasectomy is the most common cause of obstruction and is reversible through surgery. Congenital bilateral absence of the vas deferens is a genetic condition in which the tubes that carry sperm fail to develop, associated with mutations in the cystic fibrosis gene.
They can occur due to serious infections in the epididymis (epididymitis) or the vas deferens, which can leave scars that obstruct the passage, or due to trauma or surgery in the pelvic area that can accidentally damage the ducts.
Causes of non-obstructive azoospermia
It can be caused by genetic alterations such as Klinefelter syndrome, where the presence of an extra X chromosome (XXY) causes abnormal testicular development, or by deletions of the Y chromosome, where the genes responsible for sperm production are found.
Also due to hormonal imbalances (Hypogonadism) that produce insufficient essential hormones to stimulate spermatogenesis.
Failure of the testicles to descend into the scrotum during childhood (cryptorchidism), if not corrected in time, can irreversibly damage the productive function.
It can be caused by side effects of medical treatments such as chemotherapy, radiation therapy, or certain medications, or by a large, long-standing varicocele that can progress to the point of completely stopping sperm production.
Symptoms and signs
The main, and often the only, symptom of azoospermia is infertility. Men can have a completely normal sex life, with seemingly normal erections and ejaculations. There is usually no pain or obvious physical signs. However, in some cases, there may be signs associated with the underlying cause, such as low ejaculation volume (possibly indicating blockage or problems with the seminal vesicles), decreased body or facial hair, or breast development that could suggest a hormonal problem, small or soft testicles, or a history of vasectomy, mumps as a teenager, cryptorchidism, or cancer treatment.
What medical tests confirm azoospermia?
The spermiogram or seminogram is the initial test to confirm azoospermia. It must be performed at least twice, with centrifugation of the semen and a detailed examination of the sediment under a microscope to look for the possible presence of sperm.
During a physical examination, the urologist will assess the size and consistency of the testicles, palpate the epididymis and ducts, look for signs of varicocele, and consider information about medical, surgical, and family history.
A blood hormone test measuring FSH, LH, and testosterone is essential to determine the type of azoospermia.
A genetic study can be performed, which includes a karyotype to rule out Klinefelter syndrome and a study of Y chromosome deletions, especially in cases of ANO.
Finally, a testicular biopsy is the definitive test to determine whether sperm production is present. This procedure can be both diagnostic and therapeutic, as the obtained sperm can be cryopreserved for future use in assisted reproduction.
It may interest you: semen analysis how it is done.
What is the difference between azoospermia and aspermia?
In azoospermia there is ejaculation, but the ejaculated semen does not contain sperm.
In aspermia, on the other hand, there is no semen emission during orgasm, which is known as dry ejaculation. This can be due to problems such as retrograde ejaculation (semen goes to the bladder) or the absence of the glands that produce seminal fluid.
Treatments and solutions for azoospermia
Treatment depends entirely on the type and cause of azoospermia.
For obstructive azoospermia, reconstructive surgery such as vasovasostomy (vasectomy reversal) or vasoepididymostomy (connection of the vas deferens to the epididymis) may be used.
Sperm aspiration can also be performed if surgery is not possible or unsuccessful, and these are used to fertilize the partner's eggs using ICSI (Intracytoplasmic Sperm Injection).
For non-obstructive azoospermia, hormonal treatment can stimulate the production of spermatozoon In cases of hypogonadism, Micro-TESE can be used. This is a testicular biopsy performed under a surgical microscope. This allows for the precise identification and extraction of small areas of the testicle that may still be producing sperm, which are then used to perform ICSI. The success rate for sperm retrieval is around 50% to 60% in selected cases.
Finally, if viable sperm are not found, a donor sperm bank or adoption can be used to start a family.
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Prevention and care
Urological check-ups in childhood
Early correction of cryptorchidism (before 2 years of age) is vital to preserve the male fertility future.
Protection against toxins and trauma
Exposure to pesticides, heavy metals, and radiation should be avoided, and protective equipment should be worn during contact sports or hazardous work.
Healthy life style
It is important to maintain a healthy weight, exercise moderately, not smoke, and reduce alcohol consumption.
Fertility Preservation
Before undergoing treatments that could impair fertility (such as chemotherapy or radiation therapy), cryopreserving semen is recommended. For adolescents or adults undergoing these treatments, cryopreservation of testicular tissue may also be considered.
Frequently Asked Questions (FAQs)
Is it possible to have children with azoospermia?
Yes, it is possible. Thanks to techniques such as Micro-TESE combined with ICSI, many men with azoospermia can have biological children. The key lies in an accurate diagnosis to determine whether sperm production is present in the testicle.
Is azoospermia reversible?
It depends on the cause. Obstructive azoospermia caused by a vasectomy is reversible with surgery. Obstructive azoospermia caused by a hormonal imbalance may be treatable. However, in cases of obstructive azoospermia due to genetic causes or irreversible testicular damage, the condition is usually not reversible, but sperm retrieval can still be attempted.
Is azoospermia hereditary?
Some causes are, such as Y chromosome deletions, which are passed on to sons. The absence of the vas deferens is linked to cystic fibrosis, so a genetic study of the couple is essential to assess the risk of transmitting the disease. Genetic counseling is very helpful.
Does azoospermia always require assisted reproduction treatment?
Not always. If the cause is obstructive and is resolved with successful reconstructive surgery, pregnancies can be achieved naturally. However, in the vast majority of cases, the only path to biological parenthood is through assisted reproduction techniques such as ICSI.
Reservation your first medical consultation now
and discuss your case with one of our medical specialists, no strings attached.
Medical treatments with qualified professionals at Doctor T Clinic
En Doctor T Clinics We do not directly treat this type of pathologies, but if you are noticing chronic fatigue, lack of motivation, problems sleeping, or low libido, it is possible that the origin is a hormonal imbalance, such as a testosterone low.
We offer you tools to detect it in time and, if necessary, start a specialized medical treatment:
- Comprehensive health assessments focused on male wellness.
- Online Testosterone Test free, which acts as a first step in detecting hormonal problems.
- Personalized advice and treatments tailored to individual needs.
- Testicular health education and injury prevention methods.
- Testosterone Replacement Therapy (TRT), indicated in cases of primary hypogonadism o secondary hypogonadism, helps you regain your vitality, sexual energy and overall well-being.
Consult with our experts and improve your intimate health with clinical support!
Conclusion
Receiving a diagnosis of azoospermia can be overwhelming, but it's important to understand that it's not the end of the road. It represents a complex medical challenge that requires specialized evaluation by a urologist andrologist in an assisted reproduction unit. Advances in modern techniques have opened the door to hope for many men suffering from this problem, allowing them to achieve the dream of biological fatherhood. The key lies in obtaining an accurate diagnosis, a multidisciplinary approach, and access to the appropriate reproductive technologies for each case.
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