Pediatrics Which of the following is post-chemotherapy based staging system in Wilms’ tumor? A National Wilms' tumor staging system (NWTS) B International society of pediatric oncology (ISPO) C AJCCTNM D Chadwick 💡 Explanation Which of the following is post-chemotherapy based staging system in Wilms' tumor? ✓ Correct Answer: A. National Wilms' tumor staging system (NWTS)