Abstract
Objectives
The Scrotal and Penile Imaging Working Group (SPI-WG) appointed by the board of the European Society of Urogenital Radiology (ESUR) has produced recommendations for magnetic resonance imaging (MRI) of the scrotum.
Methods
The SPI-WG searched for original and review articles published before September 2016 using the Pubmed and Medline databases. Keywords used were ‘magnetic resonance imaging’, 'testis or testicle or testicular', 'scrotum', 'intratesticular', 'paratesticular', 'extratesticular' 'diffusion-weighted', 'dynamic MRI'. Consensus was obtained among the members of the subcommittee. The expert panel proposed recommendations using Oxford Centre for Evidence-Based Medicine 2011 Levels of Evidence.
Results
The recommended MRI protocol should include T1-, T2-weighted imaging, diffusion-weighted imaging and dynamic contrast-enhanced MRI. Scrotal MRI can be clinically applied for lesion characterisation (primary), including both intratesticular and paratesticular masses, differentiation between germ-cell and non-germ-cell neoplasms (evolving), characterisation of the histological type of testicular germ cell neoplasms (TGCNs, in selected cases), local staging of TGCNs (primary), acute scrotum (in selected cases), trauma (in selected cases) and undescended testes (primary).
Conclusions
The ESUR SPI-WG produced this consensus paper in which the existing literature on MRI of the scrotum is reviewed. The recommendations for the optimal imaging technique and clinical indications are presented.
Key points
• This report presents recommendations for magnetic resonance imaging (MRI) of the scrotum.
• Imaging acquisition protocols and clinical indications are provided.
• MRI is becoming established as a worthwhile second-line diagnostic tool for scrotal pathology.
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Abbreviations
- 3D:
-
Three-dimensional
- ADC:
-
Apparent diffusion coefficient
- CDUS:
-
Colour Doppler ultrasonography
- DCE:
-
Dynamic contrast-enhanced
- DWI:
-
Diffusion-weighted imaging
- ESUR:
-
European Society of Urogenital Radiology
- LCTs:
-
Leydig cell tumours
- LE:
-
Levels of Evidence
- MRI:
-
Magnetic resonance imaging
- OCEBM:
-
Oxford Centre for Evidence-Based Medicine
- SPI-WG:
-
Scrotal and Penile Imaging Working Group
- T1WI:
-
T1-weighted
- T2WI:
-
T2-weighted
- TGCNs:
-
Testicular germ cell neoplasms
- TSI:
-
Testicular segmental infarction
- TSS:
-
Testis sparing surgery
- US:
-
Ultrasonography
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The scientific guarantor of this publication is Dr. Athina C. Tsili.
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Guidelines based on literature review and expert opinion.
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Tsili, A.C., Bertolotto, M., Turgut, A.T. et al. MRI of the scrotum: Recommendations of the ESUR Scrotal and Penile Imaging Working Group. Eur Radiol 28, 31–43 (2018). https://doi.org/10.1007/s00330-017-4944-3
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DOI: https://doi.org/10.1007/s00330-017-4944-3