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Contemporary options and future perspectives: three examples highlighting the challenges in testicular cancer imaging
Gamal Anton Wakileh1, Christian Ruf2, Axel Heidenreich3
1Department of Urology and Paediatric Urology, University Hospital Ulm, Albert-Einstein-Allee 23, 89081, Ulm, Germany.
Purpose:
One of the main issues in testicular germ cell tumors (TGCTs) management is to reduce the necessary amount of treatment to achieve cure. Excess treatment burden may arise from late diagnosis of the primary as well as from false positive or negative staging results. Correct imaging is of paramount importance for successful management of TGCT. The aim of this review is to point out the current state of the art as well as innovative developments in TGCT imaging on the basis of three common challenging clinical situations.
Methods:
A selective literature search was performed in PubMed, Medline as well as in recent conference proceedings.
Results:
Regarding small testicular lesions, recent studies using elastography, contrast-enhanced ultrasound or magnetic resonance imaging (MRI) showed promising data for differentiation between benign and malignant histology. For borderline enlarged lymph nodes FDG-PET-CT performance is unsatisfactory, promising new techniques as lymphotropic nanoparticle-enhanced MRI is the subject of research in this field. Regarding the assessment of postchemotherapeutic residual masses, the use of conventional computerized tomography (CT) together with serum tumor markers is still the standard of care. To avoid overtreatment in this setting, new imaging modalities like diffusion-weighted MRI and radiomics are currently under investigation. For follow-up of clinical stage I TGCTs, the use of MRI is non-inferior to CT while omitting radiation exposure.
Conclusion:
Further efforts should be made to refine imaging for TGCT patients, which is of high relevance for the guidance of treatment decisions as well as the associated treatment burdens and oncological outcomes.
Insights
Advanced imaging techniques can improve testicular germ cell tumor (TGCT) management by reducing overtreatment. Innovations in MRI and ultrasound offer better diagnostic accuracy for small lesions and residual masses, aiding treatment decisions.
Area of Science:
- Oncology
- Radiology
- Medical Imaging
Background:
- Testicular germ cell tumors (TGCTs) require careful management to minimize treatment burden.
- Accurate diagnosis and staging are crucial to avoid overtreatment and improve outcomes.
- Current imaging modalities face challenges in specific clinical scenarios.
Purpose of the Study:
- To review the current state-of-the-art and innovative developments in TGCT imaging.
- To address challenges in imaging small testicular lesions, lymph node staging, and post-chemotherapy residual masses.
- To highlight imaging's role in guiding treatment decisions and reducing treatment burden.
Main Methods:
- Selective literature search in PubMed, Medline, and conference proceedings.
- Review of recent studies on advanced imaging techniques for TGCT.
- Focus on challenging clinical situations in TGCT management.
Main Results:
- Elastography, contrast-enhanced ultrasound, and MRI show promise for differentiating small testicular lesions.
- FDG-PET-CT is unsatisfactory for borderline lymph nodes; nanoparticle-enhanced MRI is under investigation.
- Diffusion-weighted MRI and radiomics are being explored for residual mass assessment; MRI is a non-inferior alternative to CT for stage I TGCT follow-up, avoiding radiation.
Conclusions:
- Refining imaging techniques for TGCT is essential for guiding treatment decisions.
- Improved imaging can significantly reduce treatment burden and enhance oncological outcomes.
- Continued research into novel imaging modalities is critical for optimal TGCT patient care.
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