Digestive Health Associates

Southwest Endoscopy Center

Colonic Adenoma Terminology


Low risk adenoma (LRA)
-patients with 1-2 tubular adenomas < 10 mm
High risk adenoma (HRA)
-patients with tubular adenoma ≥ 10 mm
-3 or more adenomas
-adenoma with villous histology
-adenoma with high grade dysplasia
Advanced neoplasia (HGD)
-adenoma with size ≥ 10 mm, villous histology or HGD
Lieberman DA, Rex DK, Winawer SJ, Giardiello FM, Johnson DA, Levin TR.  Guidelines for Colonoscopy Surveillance After Screening and Polypectomy: A Consensus Update by the US Multi-Society Task Force on Colorectal Cancer.  Gastroenterology. 2012 Jul 2. [Epub ahead of print] PubMed PMID: 22763141.