CT colonography earns equal standing in colorectal cancer screening

The edition in brief

Today's radiology edition leads on colorectal cancer screening. A RadioGraphics review argues CT colonography has reached parity with colonoscopy for detecting clinically significant polyps, with an excellent safety record and, since 2025, US reimbursement — yet it remains underused; only CT colonography and colonoscopy are accurate enough for primary prevention, while stool- and blood-based tests detect cancer in a narrower window. A meta-analysis of radiomics for predicting microvascular invasion in hepatocellular carcinoma found good pooled accuracy (area under the curve 0.85), best when combined with clinical data, but with heterogeneity and little external validation — not yet ready for the clinic. A prospective study found 5.0-tesla upper-abdominal MRI gives higher signal and diagnostic confidence than 1.5 and 3.0 tesla, at the cost of more motion and diffusion artefacts. A pearl reaffirms structured LI-RADS reporting in at-risk livers. The practice-changer is a meta-analysis of pancreatic cancer imaging: MRI detects liver metastases better, while CT is more specific for resectability and vascular invasion, so the two are complementary before potentially curative surgery.