Colorectal High Grade Intraepithelial Neoplasia

**Semantic type:** Neoplastic Process

**Definition:** A precancerous neoplastic process that affects the colon or rectum. It is characterized by moderate or severe epithelial dysplasia and complex architectural alterations of the mucosal epithelium. There is no evidence of invasion.

**Synonyms:** - Colorectal High-Grade Dysplasia - Colorectal High-Grade Intraepithelial Neoplasia