Journal Club
Your report, read by someone who stays current.
Imaging guidelines change. Every weekday, the radiologist behind Scan Explained reviews landmark trials and the latest research across body and chest imaging — the same evidence base that informs how your scan is interpreted and explained to you.
This week's focus
GU / RenalUpdated Wednesday, June 17, 2026.
- Landmark reference · Silverman et al., Radiology 2019;292:475–488 · SAR-endorsed cystic renal mass systemBosniak Classification of Cystic Renal Masses, Version 2019 — Update Proposal
The first major Bosniak overhaul since 2005: metric definitions (mm), formal MRI inclusion, and a push to move benign cysts into lower-risk classes.
- Landmark reference · Turkbey et al., Eur Urol 2019;76:340–351 · prostate mpMRI standardPI-RADS Version 2.1 — 2019 Update of Prostate Imaging Reporting and Data System
A refinement, not a rebuild: keeps the 1–5 scale and dominant-sequence logic but fixes the transition-zone ambiguities and technical standards that drove inter-reader disagreement.
- Current research · RadioGraphics 2023 · structured 1–5 MRI score for solid renal massesRenal Mass Imaging with the MRI Clear Cell Likelihood Score — A User's Guide
The complement to Bosniak: a 1–5 algorithm estimating the probability that a SOLID small renal mass is clear cell RCC — to triage biopsy vs surveillance.
- Current research · Radiology: Imaging Cancer 2024 · the 'watch the heterogeneous T1-bright cyst' paperT1-weighted Hyperintense Cystic Renal Masses (Bosniak v2019 Class II and IIF): Risk of Malignancy
Stress-tests Bosniak v2019: ~7% of nonenhancing T1-bright II/IIF masses were malignant — mostly papillary RCC. Pattern, not the class number, separates benign from dangerous.
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This page is an educational overview of professional literature, not medical advice. Linked articles are third-party sources.