Conjunctival Squamous Intraepithelial Neoplasia

**Semantic type:** Neoplastic Process

**Definition:** A precancerous neoplastic process involving the conjunctival squamous epithelium. It is characterized by the presence of dysplastic squamous cells within the epithelium and is classified as grade 1 (mild dysplasia), grade 2 (moderate dysplasia), and grade 3 (severe dysplasia).

**Synonyms:** - CSIN - Conjunctiva Intraepithelial Neoplasia - Conjunctival Intraepithelial Neoplasia - Intraepithelial Neoplasia of Conjunctiva - Intraepithelial Neoplasia of the Conjunctiva