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Table 1 Annotated tissue elements

From: Interobserver variability between experienced and inexperienced observers in the histopathological analysis of Wilms tumors: a pilot study for future algorithmic approach

Vital tumor elements

 1. Blastema

 2. Stroma

 3. Epithelium

 4. Anaplasia

Chemotherapy-induced changes

 5. Necrosis

 6. Bleeding

 7. Regression

Normal renal tissue

 8. Glomeruli

 9. Tubules

Extra renal tissue

 10. Fat

 11. Mesenchyme

 12. Vessels

 13. Nerves

 14. Lymph nodes

Adrenal gland

 15. Adrenal cortex

 16. Adrenal medulla

Other

 17. Urothelium

 18. Nephrogenic rests

 19. Background