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SEER Inquiry System - Report
Produced: 11/24/2024 9:49 AM
Question 20160062
Inquiry Details
References:
2014+ Grade Instructions
Question:
Grade--Kidney: Should WHO/ISUP grade for renal cell carcinoma be coded for cases diagnosed 2016 and later? See discussion.
Discussion:
The 2016 WHO Classification of Tumours of the Urinary System appears to be moving away from using Fuhrman grading toward using WHO/ISUP grade. These seem like similar 4 grade staging systems; however, the SEER Manual specifically states to not use the Special Grade System table for WHO/ISUP. We are seeing the WHO/ISUP grade being used on 2016 pathology reports.
Examples of new grading for renal cell carcinomas
Histologic type: Clear cell renal cell carcinoma
Histologic grade (WHO/ISUP 2016): Grade 3 in a background of 2 (of 4).
And
Histologic type: Clear cell renal cell carcinoma
Histologic grade (ISUP): Grade 2.
Answer:
Do not record WHO/ISUP grade in the grade/differentiation field.
Designated fields for this grade system are being proposed for future implementation.
