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Understanding Varicocele: A Guide to Diagnosis and Treatment

Living with discomfort or concerns about your reproductive health can be worrying. If you’ve noticed swelling in your scrotum or have been told you have a varicocele, you’re not alone. This is a common condition among men and is one of the causes of male fertility issues.

Varicocele is a well-understood condition with established treatment options. This guide will help you understand what a varicocele is, how it develops, and the various approaches to diagnosing and treating it in Singapore.

Dr. Nor Azhari Bin Mohd Zam
Dr. Nor Azhari Bin Mohd Zam

MBBS (NUS)|MRCS (Edin.)|MMed Surgery (NUS)|FAMS (Urology)

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Varicocele Understanding Varicocele: A Guide to Diagnosis and Treatment
Overview Types Causes Symptoms When to see a Urologist Diagnosis Treatment Complications Prevention FAQ Conclusion
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Overview
Types
Causes
Symptoms
When to see a Urologist
Diagnosis
Treatment
Complications
Prevention
FAQ
Conclusion

What is Varicocele?

A varicocele is an enlargement of the veins within the scrotum, the loose bag of skin that holds the testicles. These enlarged veins are similar to varicose veins that occur in the legs. The condition develops when the valves inside the veins along the spermatic cord (the structure that suspends each testicle) stop functioning properly. When these valves fail, blood pools and the veins dilate.

Varicoceles typically form during puberty and develop gradually over time. They occur more frequently on the left side of the scrotum, though they can appear on both sides.

In Singapore and across Asia, varicocele is seen in men experiencing fertility challenges, highlighting the importance of proper diagnosis and management.

Types of Varicocele

Primary Varicocele

Primary varicocele is the common form. It occurs when the valves within the testicular veins fail to function correctly. This type typically develops during adolescence when the testicles are growing rapidly and require increased blood flow. The left side is more commonly affected due to the anatomical difference in how the left testicular vein drains compared to the right.

Secondary Varicocele

Secondary varicocele occurs when there is external compression or obstruction of the spermatic vein. This type is less common and may develop suddenly in older men. Causes can include:

  • Tumours in the kidney or abdomen that press on the veins
  • Blood clots that obstruct normal venous drainage

Secondary varicocele requires thorough investigation to identify the underlying cause.

Clinical Grading

Urologists classify varicoceles into three grades based on physical examination:

  • Grade I (Small): Only detectable when the patient performs a Valsalva manoeuvre (bearing down as if having a bowel movement)
  • Grade II (Moderate): Can be felt without the Valsalva manoeuvre but not visible
  • Grade III (Large): Visible through the scrotal skin and easily felt, often described as feeling like a “bag of worms”

Causes & Risk Factors

Common Causes

Varicoceles primarily develop when malfunctioning one-way valves within the testicular veins allow blood to flow backwards and pool, causing the vessels to enlarge.

  • Valve Failure: When internal valves fail to prevent blood from flowing backwards toward the heart, the resulting backup typically causes progressive vein dilation.
  • Anatomical Pressure: The left testicular vein enters the renal vein at a sharp angle, creating significantly higher pressure than on the right.
  • Drainage Path: The right side is less susceptible because its vein drains at a less acute angle directly into the larger inferior vena cava.
  • Vessel Compression: The longer course of the left vein and its potential compression between other abdominal blood vessels further contribute to the condition.

Risk Factors

Several factors may be associated with developing a varicocele:

  • Age: Varicoceles can develop during puberty
  • Height: Taller individuals may have increased venous pressure
  • Family history: Genetic predisposition to valve weakness
  • Body composition: Lower body mass index may be associated with the condition
  • Physical activity: Prolonged standing or heavy lifting may exacerbate symptoms
  • Left-sided anatomy: The left side is commonly affected

Signs & Symptoms

Mild Symptoms

Many men with varicocele experience no symptoms at all. The condition is often discovered during routine physical examinations or fertility evaluations. When symptoms are present, they may include:

  • Mild discomfort or heaviness in the affected testicle
  • A dull, aching pain that worsens after standing for long periods
  • Slight visible or palpable enlargement of scrotal veins
  • Discomfort that improves when lying down

These mild symptoms often go unnoticed or are attributed to other causes. Men may only become aware of the condition when it affects fertility.

Moderate Symptoms

As the varicocele progresses, symptoms may become more noticeable:

  • Scrotal discomfort that interferes with daily activities
  • Visible swelling in the scrotum, particularly when standing
  • Sharp or throbbing pain after physical exertion
  • Noticeable size difference between testicles
  • Increased discomfort in warm weather or after exercise

The discomfort typically increases throughout the day and is relieved by lying flat, as this allows blood to drain more easily from the enlarged veins.

Severe Symptoms

In advanced cases, varicocele may cause:

  • Pain affecting quality of life
  • Testicular atrophy (shrinkage)
  • Clearly visible enlarged veins resembling a “bag of worms”
  • Fertility problems due to decreased sperm production
  • Reduced testosterone levels in some cases

The severity of symptoms does not always correlate with the size of the varicocele. Some men with large varicoceles have minimal symptoms, whilst others with smaller ones experience discomfort.

Experiencing scrotal discomfort or concerned about fertility?

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When to See a Urologist

Consult a urologist if you experience any of the following:

  • A lump or swelling in your scrotum
  • Scrotal pain or discomfort
  • One testicle appears smaller than the other
  • Difficulty conceiving after 12 months of trying
  • Visible enlarged veins in the scrotal area
  • Sudden development of a varicocele (especially if you’re over 40)

Early consultation is particularly important for adolescents, as treatment during this stage may help prevent future fertility issues and testicular atrophy. Men experiencing fertility challenges should also seek evaluation promptly.

During your first consultation, the urologist will take a detailed medical history and perform a physical examination. They may order additional tests. The examination is straightforward and typically takes only a few minutes. Being prepared to discuss your symptoms, their duration, and any fertility concerns will help your doctor provide appropriate care.

Diagnosis and Testing Methods

Physical Examination

The physical examination is the cornerstone of varicocele diagnosis. Your urologist will examine your scrotum whilst you are standing and lying down. You may be asked to perform a Valsalva manoeuvre to make the varicocele more prominent. The doctor will assess the size, location, and grade of the varicocele and check for testicular size differences.

Scrotal Ultrasound

Scrotal ultrasound with Doppler imaging is commonly used to confirm a varicocele. This painless, non-invasive imaging procedure uses sound waves to create detailed images of the testicles and surrounding structures. The Doppler component measures blood flow in the veins and can detect reflux (backward flow), which confirms the diagnosis.

No special preparation is required. You simply lie on the examination table whilst a technician moves a small probe over the scrotal area. Results are typically available immediately or within a few days.

Semen Analysis

For men concerned about fertility, a semen analysis evaluates:

  • Sperm count (the number of sperm present)
  • Motility (movement)
  • Morphology (shape)

This test helps determine if fertility has been impacted. Varicoceles can affect sperm production and quality. You will be asked to abstain from ejaculation for 2-5 days before providing a sample.

Hormone Testing

Blood tests measuring testosterone (a hormone that plays a key role in male development and reproductive function) and other hormone levels may be ordered if there are concerns about hormonal function. Men with varicoceles may have varying hormone levels, and some may experience reduced testosterone production, particularly with larger varicoceles or bilateral involvement.

Treatment Options Overview

Observation and Monitoring

Not all varicoceles require treatment. If you have a small varicocele with no symptoms and no fertility concerns, the urologist may recommend regular monitoring. This approach involves periodic examinations and ultrasounds to track the condition over time.

Conservative management also includes lifestyle modifications such as wearing supportive underwear, avoiding prolonged standing, and using over-the-counter pain relievers when needed. For adolescents, monitoring testicular growth through regular measurements helps determine if intervention becomes necessary.

Medications for Symptom Management

While medications do not address the underlying varicocele, certain treatments can help manage symptoms. Non-steroidal anti-inflammatory drugs (NSAIDs, such as ibuprofen) may provide relief from discomfort. In some cases, hormonal therapies may be considered to address any testosterone deficiencies. This approach is tailored to your specific circumstances.

Pain management strategies and supportive measures often provide relief for men with mild symptoms who prefer to avoid surgical intervention.

Surgical Varicocelectomy

Surgical repair is one of the treatment options for symptomatic varicoceles or those affecting fertility. The procedure involves ligating (tying off) the affected veins to redirect blood flow through healthy vessels.

  • Microsurgical Varicocelectomy is a commonly performed surgical approach. Using an operating microscope, the surgeon makes a small incision in the groin area, carefully identifies and ties off the enlarged veins whilst preserving the testicular artery and lymphatic vessels. This precision aims to reduce complication rates and recurrence.
  • Open Inguinal Varicocelectomy involves a larger incision in the groin area. This is a routine approach, though complication rates differ from microsurgical techniques.
  • Laparoscopic Varicocelectomy uses small incisions and a camera to visualise and ligate the veins within the abdomen. This minimally invasive approach offers quick recovery, though outcomes vary among patients.
Percutaneous Embolisation

A small catheter (a thin, flexible tube) is inserted through a vein in the neck or groin and guided to the testicular vein using X-ray imaging. Tiny coils or a special solution are then used to block the affected veins, redirecting blood flow.

Percutaneous embolisation requires no surgical incision and can be performed under local anaesthesia with sedation. Patients can return to normal activities within a short period. This approach is particularly suitable for men who prefer to avoid surgery or those with recurrent varicoceles after previous surgery.

Post-Treatment Care and Recovery

Recovery timelines depend on the specific procedure performed, with most men returning to their normal routines relatively quickly.

  • Recovery Timelines: After microsurgical repair, men can typically return to desk work within a week and resume physical activities within a few weeks, while recovery from embolisation is often faster, allowing a return to normal activities within a few days.
  • Post-Procedure Care: Your urologist will provide specific instructions tailored to your recovery, covering pain management, activity restrictions, and scheduled follow-up appointments.
  • Fertility Monitoring: For those undergoing treatment for fertility reasons, a semen analysis is typically repeated several months later, as it takes time for new sperm production to reflect the improvements.
  • Supportive Measures: Following the doctor’s guidance on wearing supportive underwear and managing physical exertion during the initial healing phase supports optimal recovery.

Dr Azhari can recommend a treatment approach tailored to your specific health status, symptoms, and fertility goals.

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Complications if Left Untreated

Whilst varicocele is not life-threatening, leaving it untreated can lead to several complications over time.

  • Testicular Atrophy: The pooling of blood in the enlarged veins can damage testicular tissue, causing the affected testicle to shrink. This atrophy may affect sperm and testosterone production. In adolescents, early treatment may help the testicle recover growth potential in some cases.
  • Fertility Issues: Varicocele is a correctable cause of male infertility. The elevated scrotal temperature caused by pooled blood can impair sperm production and quality. Surgical repair can improve sperm parameters in some men.
  • Hormonal Changes: Larger varicoceles may affect testosterone production, potentially leading to symptoms such as reduced energy, decreased muscle mass, and mood changes. These effects are typically subtle but may become more pronounced over time.
  • Chronic Pain: Without treatment, the discomfort associated with a varicocele may persist or worsen, affecting daily activities and quality of life.
  • Progressive Enlargement: Varicoceles can gradually increase in size, making future treatment more complex and potentially increasing the risk of complications.

Prevention

For adolescents and young men, regular health check-ups that include genital examination can help detect varicoceles early, allowing for monitoring and timely intervention if needed.

Men with known varicoceles should maintain regular follow-up appointments with their urologist to monitor the condition and address any changes promptly.

Varicocele cannot typically be prevented due to its anatomical and genetic causes. However, certain measures may help reduce symptoms or slow progression:

  • Maintain a healthy weight through a balanced diet and regular exercise
  • Avoid prolonged standing when possible, and take breaks to sit or walk
  • Wear supportive underwear during physical activities
  • Manage constipation to reduce straining during bowel movements
  • Address chronic coughing, as this increases abdominal pressure
  • Stay hydrated and maintain good overall cardiovascular health

Frequently Asked Questions

Can a varicocele affect my ability to have children?

Varicocele can impact fertility in some men by elevating scrotal temperature, which affects sperm production and quality. However, many men with varicoceles naturally father children. If you’re having difficulty conceiving, consulting a healthcare professional is recommended. Treatment may improve sperm parameters in some cases.

Is varicocele treatment painful?

Varicocele procedures typically involve some discomfort, which varies by individual. Percutaneous embolisation is performed under local anaesthesia with sedation, and patients typically experience only mild soreness afterwards. Surgical varicocelectomy may cause moderate discomfort for a few days, which is manageable with prescribed pain medication.

How long does it take to recover from varicocele surgery?

After microsurgical varicocelectomy, men can return to desk jobs within about a week and resume strenuous activities within a few weeks. Recovery from percutaneous embolisation is typically faster, with patients returning to normal activities within a few days.

Will a varicocele come back after treatment?

Recurrence rates vary by treatment type. Microsurgical varicocelectomy has lower recurrence rates, whilst laparoscopic approaches have different rates. If a varicocele recurs, additional treatment options are available.

Can a varicocele go away on its own?

Varicoceles do not resolve spontaneously. Once developed, they typically remain stable or gradually enlarge over time. However, not all varicoceles require treatment. Small, asymptomatic varicoceles that do not affect fertility can often be safely monitored.

At what age should a varicocele be treated?

There is no single “right” age for treatment. In adolescents, treatment may be recommended if there is a testicular size discrepancy, abnormal semen parameters, or progressive enlargement. In adults, treatment is considered for pain, fertility concerns, or testosterone deficiency. Early evaluation allows for informed decision-making about the timing of intervention.

Does varicocele affect testosterone levels?

Varicocele may affect testosterone production in some men, particularly those with larger or bilateral varicoceles. However, many men with varicoceles maintain normal testosterone levels. If you’re experiencing symptoms of low testosterone, your urologist can order blood tests to assess your hormonal status.

Is varicocele surgery covered by insurance or Medisave?

Treatment coverage varies depending on your specific insurance policy and whether the procedure is deemed medically necessary. Some varicocele treatments are Medisave-claimable when performed for medical indications. Speak with clinic staff to understand your coverage options.

Important Disclaimer:

Individual experiences with varicocele symptoms, treatment responses, and recovery timelines may vary based on personal health factors, the severity of the condition, and the specific treatment approach chosen. The information in this guide is educational and should not replace professional medical advice. Always consult healthcare professionals for diagnosis, treatment recommendations, and personalised guidance tailored to your unique health circumstances and fertility goals.

Conclusion

Varicocele is a common condition that affects many men, but it need not be a source of ongoing concern. With proper diagnosis and appropriate treatment, men can experience improvement in symptoms and, where relevant, fertility outcomes.

Understanding your condition is the first step towards appropriate management. Whether your varicocele requires active treatment or careful monitoring, working with a urologist enables you to receive personalised care based on your specific circumstances and goals.

Treatment options, from minimally invasive embolisation to microsurgical repair, offer outcomes with minimal disruption to daily life. The key is to seek evaluation when symptoms arise or when fertility becomes a concern, enabling timely intervention when appropriate.

If you’re experiencing varicocele symptoms or have concerns about fertility, speak with Dr Azhari, who can recommend a testing and treatment plan tailored to your individual circumstances and answer any questions you may have.

Take the First Step Towards Better Health

Living with varicocele symptoms or concerns about fertility can be challenging. Consult Dr Azhari for diagnosis and treatment of varicocele.

Book Your Consultation Today
Dr. Nor Azhari Bin Mohd Zam

Dr. Nor Azhari Bin Mohd Zam

MBBS (NUS)|MRCS (Edin.)|MMed Surgery (NUS)|FAMS (Urology)

Former Director of Endourology (Urinary stone service) Singapore General Hospital 2016 to 2023

With more than 20 years experience as a certified Urologist, Dr Nor Azhari specializes in treating a wide range of kidney, bladder and prostate conditions as well as disorders of the male reproductive organs. He offers minimally invasive treatment options and provides same-day appointments for convenience.

  • Skilled urologist and kidney stone surgeon
  • Recognized with the College of Surgeons Gold Medal and Singapore Urological Association Book prize
  • Minimally invasive treatment options available (non-invasive and endoscopic/key-hole techniques)
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