Data Last Updated: Feb. 14, 2019 (Version 1.5)

Grade Post Therapy

Notes

**Note 1:** Leave post therapy grade blank when * No neoadjuvant therapy * Clinical or pathological case only * There is only one grade available and it cannot be determined if it is clinical, pathological or post therapy **Note 2:** Assign the highest grade from the resected primary tumor assessed after the completion of neoadjuvant therapy. **Note 3:** Codes 1-3 take priority over A-D. **Note 4:** Code 9 when * Surgical resection is done after neoadjuvant therapy and grade from the primary site is not documented * Surgical resection is done after neoadjuvant therapy and there is no residual cancer * Grade checked "not applicable" on CAP Protocol (if available) and no other grade information is available
Code Description
1 G1: Sum of differentiation score, mitotic count score and necrosis score equals 2 or 3
2 G2: Sum of differentiation score, mitotic count score and necrosis score of 4 or 5
3 G3: Sum of differentiation score, mitotic count score and necrosis score of 6, 7, or 8
A Well differentiated
B Moderately differentiated
C Poorly differentiated
D Undifferentiated, anaplastic
9 Grade cannot be assessed (GX); Unknown
<BLANK> See Note 1