Can you interpret the scrotal ultrasound of a 68‑year‑old man with left testicular enlargement, a soft non‑painful mass, no urinary symptoms, and a family history of testicular cancer?

Scrotal Ultrasound Interpretation in a 68-Year-Old with Testicular Enlargement

Yes, I can interpret the ultrasound findings, and you must obtain a scrotal ultrasound with Doppler immediately—this is the definitive initial imaging modality for any palpable scrotal abnormality, and given this patient's concerning presentation (age 68, left testicular enlargement, family history of testicular cancer presenting with back pain, occupational radiation exposure), malignancy must be ruled out urgently. 1

Why Ultrasound is Essential

Scrotal ultrasound with Doppler is nearly 100% sensitive for detecting intrascrotal masses and 98-100% accurate for distinguishing intratesticular from extratesticular processes 1. This distinction is critical because:

• Intratesticular masses are malignant until proven otherwise—even in a 68-year-old, though testicular cancer typically affects younger men 2, 3
• Extratesticular masses are usually benign 2

The combination of grayscale and color-power Doppler significantly improves characterization of scrotal lesions 1. Doppler helps differentiate solid vascular masses from avascular lesions like hematomas or cysts, and can identify inflammatory processes 1.

Critical Red Flags in This Case

This patient has multiple concerning features that elevate malignancy risk:

• Age 68 with new testicular enlargement—while uncommon, testicular cancer can occur at any age
• Family history of stage IV testicular cancer that presented with back pain—identical to this patient's presentation
• Back pain for 3 weeks—retroperitoneal lymph nodes are the initial landing station for testicular cancer metastases 3. The family member's presentation with back pain as the initial symptom of metastatic disease is particularly alarming
• Occupational radiation exposure—lifetime airline captain with increased atmospheric radiation
• Soft, non-painful mass—testicular tumors typically present as painless masses 4

What the Ultrasound Will Show

The ultrasound findings will guide management:

If Intratesticular Mass Detected:

• Any solid or mixed cystic intratesticular lesion requires surgical exploration 1
• Hypoechoic or inhomogeneous patterns are suspicious for malignancy 1
• Critical limitation: Ultrasound cannot definitively differentiate benign from malignant testicular lesions—all suspicious intratesticular masses are treated as malignant 1
• Duplex Doppler has lower specificity than sensitivity because benign conditions (orchitis, dermoid cyst, granuloma, focal fibrosis, adrenal rest, papillary cystadenoma) can mimic cancer 1

If Extratesticular Mass:

• Likely benign (hydrocele, spermatocele, epididymal cyst)
• May still require further evaluation depending on characteristics

Additional Findings to Note:

• Heterogeneous or hypoechoic testicular echotexture
• Contour abnormalities
• Disruption of tunica albuginea
• Vascularity patterns on Doppler 1

Immediate Next Steps After Ultrasound

If Intratesticular Mass Confirmed:

1. Obtain tumor markers immediately: AFP, β-hCG, LDH 3
2. CT chest/abdomen/pelvis for staging if intratesticular mass confirmed—given the back pain, retroperitoneal lymphadenopathy must be evaluated 3
3. Urgent urology referral for radical inguinal orchiectomy—this is both diagnostic and therapeutic 3, 5

If Ultrasound is Equivocal:

• MRI pelvis can serve as a problem-solving tool when ultrasound findings are unclear 1
• MRI may help distinguish intratesticular from extratesticular masses and differentiate benign from malignant lesions 1
• Contrast-enhanced ultrasound (CEUS) is emerging as useful—virtually all testicular tumors show vascularization on CEUS (except cystic components and necrotic regions) 1

Common Pitfalls to Avoid

1. Do not delay imaging because the patient is 68—while testicular cancer peaks at ages 18-35, it occurs across all age groups 3
2. Do not be falsely reassured by absence of pain—testicular tumors are characteristically painless 4
3. Do not attribute back pain solely to musculoskeletal causes without ruling out retroperitoneal metastases, especially given the family history
4. Do not order CT or MRI as initial imaging—ultrasound is the appropriate first test 1
5. Do not assume a soft, squishy sensation rules out malignancy—some testicular tumors have cystic components 6, 7

The Family History Context

The family member's presentation with back pain as the initial symptom of stage IV testicular cancer is particularly relevant. Retroperioneal lymph nodes are regional nodes for testicular cancer, and enlarged nodes can cause back pain 3. This patient's back pain, occurring simultaneously with testicular changes, cannot be dismissed as musculoskeletal until malignancy is excluded.

Bottom line: Order scrotal ultrasound with Doppler now. If an intratesticular mass is identified, proceed immediately to tumor markers and staging CT, followed by urgent urology consultation for orchiectomy. The combination of clinical presentation, family history, and occupational risk factors demands aggressive evaluation to avoid missing potentially curable testicular cancer or detecting it at an advanced stage.