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SEER Inquiry System - Report
Produced: 04/26/2026 2:24 PM
Question 20170033
Inquiry Details
References:
SINQ 20160023
Question:
Grade--Appendix: What is the code and term to use for the grade/differentiation field for well differentiated, Grade 2 neuroendocrine tumor (NET)? See Discussion.
Discussion:
Diagnosis: Fragmented appendix with: Goblet cell carcinoid tumor (typical goblet cell carcinoid): WELL DIFFERENTIATED neuroendocrine tumor; INTERMEDIATE GRADE (GRADE 2 NET). Size 3.5 cm according to surgical pathology report. Tumor infiltrates through appendiceal wall to subserosa. Tumor is present in what appears to be the wall of the appendix near the perforation site or in hemorrhagic tissue on the surface of the appendix. MAXIMUM MITOTIC RATE IS TWO (2) FIGURES PER 10 HIGH POWER fields (2/10hpf). (4/10 hpf according to report).
WD indicates a 3- grade system (code 1 for WD) Intermediate grade indicates a 3- grade system (code grade 3 for intermediate grade), Grade 2 indicates a 2- grade system (code 2 for grade 2). Please advise.
Answer:
See SINQ 20160023 for NET grade coding instructions. Coding grade for NETs is slightly different from coding grade for other solid tumors.
Since this diagnosis includes "Well differentiated" and "Grade 2," assign grade code 2, the higher grade. According to our expert pathologist consultant, "intermediate" fits best with grade 2.
