Clinical Scorecard: Current Strategies and Future Directions: Illustrating the Challenges in Imaging Testicular Cancer Through Three Case Studies

At a Glance

Key Highlights

• TGCTs represent 90%–95% of testicular neoplasms, with seminomas and non-seminomas comprising roughly equal proportions.
• Initial diagnosis relies on physical exam, scrotal ultrasound, and tumor markers; CT is standard for staging but raises concerns about cumulative radiation exposure.
• Emerging imaging techniques such as shear wave elastography (SWE), contrast-enhanced ultrasound (CEUS), and MRI radiomics show promise in improving lesion characterization and differentiation.

Guideline-Based Recommendations

Diagnosis

• Perform physical examination and scrotal ultrasound (B-mode with high-frequency probes) to detect and characterize testicular masses.
• Use tumor markers AFP, β-hCG, and LDH to support diagnosis and staging.
• Apply color-coded duplex sonography to assess vascularization of intratesticular masses.
• Consider CEUS to differentiate vascularized from non-vascularized lesions, especially for small (<1.5 cm) testicular masses.
• Use MRI with advanced analytic methods (radiomics, diffusion-weighted imaging) as adjunct for equivocal cases.

Management

• Surgical exploration and orchiectomy remain standard for suspicious lesions.
• Avoid overtreatment of small benign lesions (e.g., Leydig cell tumors) detected incidentally.
• Limit CT imaging frequency to minimize cumulative radiation exposure, balancing staging and surveillance needs.

Monitoring & Follow-up

• Conduct regular follow-up imaging, typically averaging two CT scans per year over 4–6 years post-therapy.
• Monitor tumor markers serially to detect recurrence or progression.

Risks

• Cumulative radiation exposure from repeated CT scans increases lifetime risk of secondary malignancies (1.9%–2.6%).
• Potential overtreatment of benign small testicular masses if imaging characterization is insufficient.

Patient & Prescribing Data

Young men with suspected or confirmed testicular germ cell tumors

Treatment decisions guided by imaging and tumor marker profiles; emphasis on minimizing radiation exposure and avoiding unnecessary orchiectomy in benign lesions.

Clinical Best Practices

• Use high-frequency B-mode ultrasound combined with Doppler to assess testicular lesions.
• Incorporate CEUS to improve differentiation of small testicular masses without radiation exposure.
• Consider MRI with radiomics analysis for challenging cases to enhance histologic prediction.
• Balance imaging frequency to reduce radiation risk while ensuring adequate surveillance.
• Interpret imaging findings in conjunction with tumor markers and clinical presentation to guide management.

References

• ESUMB Guidelines on Contrast-Enhanced Ultrasound
• Feliciani et al. MRI Radiomics in Testicular Tumors
• Current TGCT Treatment Guidelines