epithelial neoplasm precancerous condition intraepithelial neoplasia NCIT:C8366 epithelial dysplasia A precancerous neoplastic process that affects the squamous, glandular, or transitional cell epithelium without evidence of invasion. According to the degree of nuclear atypia, number of mitotic figures, and presence of architectural distortion, it is classified as low grade (mild dysplasia) or high grade (moderate or severe dysplasia). intraepithelial neoplasia intraepithelial neoplasm MONDO:0024474 MEDGEN:164203 UMLS:C0878500