Mens Health · Supplementary · from Mens Health

Case 3: Male Infertility Evaluation

Patient Presentation

Demographics: 34-year-old male financial analyst

Chief Complaint: "My wife and I have been trying to conceive for 18 months without success."

History of Present Illness: The patient and his 31-year-old wife present for male infertility evaluation after 18 months of regular unprotected intercourse without conception. His wife has undergone a gynecological evaluation including hormone levels, pelvic ultrasound, and hysterosalpingography, all of which were normal. They report intercourse 3-4 times per week, with good understanding of the fertile window.

The patient reports normal libido and erectile function. He has no history of prior conceptions or pregnancies with previous partners. He denies any testicular trauma, surgery, or infections including mumps orchitis. He reports a history of bilateral cryptorchidism corrected surgically at age 4 (orchiopexy). He denies any exposure to gonadotoxic medications, radiation, or chemotherapy.

He reports that he works long hours (60+ hours/week) at a desk, frequently uses a laptop on his lap, and uses a hot tub 3-4 times per week for relaxation. He has been under significant work stress for the past 2 years. He exercises regularly with cycling as his primary activity (200+ km/week competitive cycling).

Past Medical History:

• Bilateral cryptorchidism (orchiopexy at age 4)
• Varicocele noted incidentally at age 20 (no prior treatment)
• Appendectomy at age 12

Medications:

• Testosterone cream 1% applied daily (started 6 months ago from an online men's health clinic for "optimization")
• Finasteride 1 mg daily (for hair loss prevention, started 2 years ago)
• Multivitamin
• Whey protein supplement

Social History:

• Non-smoker, social alcohol (4-6 drinks per week)
• Avid cyclist (200+ km/week)
• Regular hot tub use (3-4x/week, 30-minute sessions)
• Uses laptop on lap daily
• Occasional marijuana use (1-2 times per month)
• High-stress work environment

Family History:

• Father: Healthy
• Mother: PCOS (required fertility treatment)
• Brother: Conceived naturally without difficulty

Physical Examination

• Vital Signs: BP 118/72 mmHg, HR 62 bpm, RR 14, Temp 36.8°C, SpO2 99% RA, BMI 24.8
• General: Athletic, well-developed male
• Endocrine: No gynecomastia, normal male hair distribution, no acne
• Genitourinary:
• Penis: Normal, circumcised, urethral meatus normally positioned
• Right testis: 15 mL volume (slightly reduced), firm consistency, non-tender, no masses
• Left testis: 14 mL volume (slightly reduced), firm consistency, non-tender, no masses
• Left spermatic cord: Grade II varicocele palpable (increases with Valsalva maneuver), "bag of worms" sensation
• Right spermatic cord: No varicocele
• Vas deferens: Palpable bilaterally
• Epididymis: Non-tender, no fullness bilaterally
• DRE: Normal-sized prostate, no abnormalities

Workup and Results

Laboratory Studies:

Imaging/Additional Studies:

• Scrotal ultrasound: Left varicocele (largest vein 3.8 mm with reflux on Valsalva), both testes slightly reduced volume (right 13.2 mL, left 12.8 mL) with heterogeneous echotexture, no masses, no microlithiasis
• Scrotal Doppler: Elevated left testicular venous reflux confirmed
• Transrectal ultrasound: Normal seminal vesicles and ejaculatory ducts

Clinical Image

Flowchart illustrating the systematic evaluation of male infertility: from semen analysis abnormalities through hormonal assessment, physical examination findings, and identification of correctable causes including varicocele, exogenous testosterone use, and gonadotoxin exposure. Source: Educational illustration.

Diagnosis

Oligoasthenoteratozoospermia (OAT Syndrome) - Multifactorial Etiology: Exogenous Testosterone-Induced Hypogonadotropic Hypogonadism, Grade II Left Varicocele, Finasteride-Associated Spermatogenic Impairment, Elevated Scrotal Temperature from Lifestyle Factors, and History of Bilateral Cryptorchidism

Key Diagnostic Criteria:

• Two semen analyses confirming oligozoospermia (< 15 million/mL), asthenozoospermia (< 40% motility), and teratozoospermia (< 4% normal morphology)
• Suppressed gonadotropins (LH 0.3, FSH 0.4) with supraphysiologic testosterone indicating exogenous testosterone-induced HPG axis suppression as primary acute cause
• Grade II left varicocele with reflux on Doppler
• Elevated sperm DNA fragmentation index (38%) suggesting oxidative stress damage
• Multiple modifiable risk factors: exogenous testosterone, finasteride, excessive cycling, hot tub exposure, laptop heat exposure

Treatment Plan

1. Immediate medication changes (critical):

• Discontinue exogenous testosterone immediately - this is the most important intervention; exogenous testosterone suppresses intratesticular testosterone (which is 50-100x higher than serum levels) by suppressing LH, leading to spermatogenic arrest; patient education that "testosterone optimization" with exogenous T is an effective male contraceptive
• Discontinue finasteride - 5-alpha reductase inhibitors impair spermatogenesis by blocking conversion of testosterone to DHT, which is required for normal sperm development; effects may take 3-6 months to reverse

1. HPG axis recovery protocol:

• Clomiphene citrate 25 mg every other day to stimulate endogenous LH/FSH recovery and intratesticular testosterone production
• HCG 1500 IU subcutaneous 3x/week as adjunct to directly stimulate Leydig cells while awaiting pituitary recovery
• Monitor LH, FSH, testosterone, and estradiol monthly; repeat semen analysis at 3, 6, and 9 months (full spermatogenic cycle is 74 days)

1. Varicocele repair:

• Refer for microsurgical subinguinal varicocelectomy given Grade II varicocele with abnormal semen parameters; meta-analyses demonstrate improvement in semen parameters in 60-80% of men and natural pregnancy rates of 30-40% post-repair

1. Lifestyle modifications:

• Discontinue hot tub use entirely (scrotal hyperthermia reduces spermatogenesis)
• Reduce cycling to < 100 km/week and use a properly fitted saddle with perineal cutout; avoid cycling in tight clothing
• Use laptop on desk, not lap (scrotal temperature elevation documented with laptop use)
• Discontinue marijuana (associated with reduced sperm concentration and motility via endocannabinoid receptor effects on spermatogenesis)

1. Antioxidant supplementation (for DNA fragmentation):

• Coenzyme Q10 200 mg BID, L-carnitine 1000 mg BID, vitamin C 500 mg daily, vitamin E 400 IU daily, zinc 30 mg daily, selenium 200 mcg daily, folic acid 5 mg daily

1. Follow-up and timeline counseling:

• Semen analyses at 3, 6, and 9 months post-intervention (allow minimum 2-3 spermatogenic cycles for improvement)
• If semen parameters remain severely impaired at 9 months, discuss IVF with ICSI as next step
• Cryopreserve any improved samples as backup for ART

Key Learning Points

• Exogenous testosterone administration is a highly effective male contraceptive that suppresses intratesticular testosterone to near-zero levels by eliminating LH drive; it is one of the most common iatrogenic causes of male infertility and is increasingly prescribed by telemedicine clinics without fertility counseling
• Recovery of spermatogenesis after exogenous testosterone cessation typically takes 6-12 months but can take up to 24 months; some men (especially with prolonged use) may not fully recover, making clomiphene and HCG recovery protocols essential
• Finasteride, commonly used for androgenic alopecia, impairs spermatogenesis and should be discontinued in men attempting conception; effects are usually reversible but may persist for months
• Varicocele is the most common correctable cause of male infertility, found in 35-40% of men with primary infertility; microsurgical repair has the best outcomes with lowest recurrence rates
• Sperm DNA fragmentation testing provides prognostic information beyond standard semen analysis and can explain infertility in men with apparently normal or mildly abnormal conventional parameters

All cases for this lecture as Markdown