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:** Grade is applicable for the follicular lymphomas only (9690/3, 9691/3, 9695/3, 9698/3). For all other lymphoma histologies, code 9. **Note 3:** Assign the highest grade from the resected primary tumor assessed after the completion of neoadjuvant therapy. **Note 4:** Follicular lymphoma grade is based on the absolute number of centroblasts per high-power (40 x objective, 0.159 square mm) microscopic field (HPF). **Note 5:** Codes 1-5 take priority over L. **Note 6:** Code 9 when * Surgical resection is done after neoadjuvant therapy and grade from the primary site is not documented * Grade checked “not applicable” on CAP Protocol (if available) and no other grade information is availableNAACCR Item
NAACCR #3845Metadata
SSDI| Code | Description |
|---|---|
| 1 | G1: 0–5 centroblasts per HPF |
| 2 | G2: 6-15 centroblasts per HPF |
| 3 | G3: > 15 centroblasts |
| 4 | G3A: >15 centroblasts per HPF and centrocytes present |
| 5 | G3B: > 15 centroblasts per HPF and solid sheets of centroblasts |
| L | Low grade: Grade 1-2 |
| 9 | Grade cannot be assessed (GX); Unknown Not a follicular histology (9690/3, 9691/3, 9695/3, 9698/3) |
| <BLANK> | See Note 1 |