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flag A new PET scan agent shows high accuracy in detecting kidney cancer, especially small tumors, and is now recommended in global guidelines.

flag TLX250-CDx (Zircaix), an investigational PET imaging agent targeting carbonic anhydrase IX in kidney cancer, has been included in new guidelines from major global nuclear medicine organizations for the first time. flag The guidelines highlight its high accuracy in detecting clear cell renal cell carcinoma, with 86% sensitivity, 87% specificity, and 93% positive predictive value in the ZIRCON trial, particularly for small, hard-to-see tumors. flag Unlike standard 18F-FDG PET, it offers better image clarity due to lower kidney excretion. flag The agent is not yet approved but may accelerate clinical use as a tool for precise diagnosis and personalized treatment planning.

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