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SEER Inquiry System - Report
Produced: 02/04/2026 2:07 PM
Question 20240043
Inquiry Details
References:
#1: ICD-O-3.2
#2: Solid Tumor Rules. Other Sites, 2024 Update
Question:
Reportability/Histology--Digestive Sites: Is a diagnosis of “tubulovillous adenoma with high grade dysplasia” in the duodenum equivalent to a diagnosis of “tubulovillous adenoma, high grade” and, therefore, non-reportable, or is this a reportable non-colorectal high grade dysplasia? See Discussion.
Discussion:
The 2022 ICD-O-3.2 Implementation Guidelines indicate “Tubulovillous adenoma, high grade” is 8263/2 and is not SEER reportable. However, the 2024 SEER Manual and clarification from recent SINQs (20240021 and 20240025) confirm high grade dysplasia in the esophagus, stomach, and small intestine is reportable (8148/2).
Which reportability reference applies to a diagnosis of a tubulovillous adenoma with high grade dysplasia in non-colorectal sites?
Answer:
A diagnosis of “tubulovillous adenoma with high grade dysplasia” in the duodenum is not equivalent to a diagnosis of “tubulovillous adenoma, high grade.”
Tubulovillous adenoma, high grade (8263/2) is not reportable as of 2022.
High grade dysplasia (glandular intraepithelial neoplasia, grade III) is reportable in the esophagus, stomach, and small intestine (8148/2).
