Squamous Cell Carcinoma In Situ

**Semantic type:** Neoplastic Process

**Definition:** A malignant epithelial neoplasm confined to the squamous epithelium, without invasion of the underlying tissues.

**Synonyms:** - CARCINOMA, SQUAMOUS CELL, IN SITU, MALIGNANT - Epidermoid Carcinoma In situ - Epidermoid Carcinoma in situ - Epidermoid Cell Carcinoma In situ - Epidermoid Cell Carcinoma in situ - Epidermoid carcinoma in situ, NOS - Grade 3 SIN - Grade 3 Squamous Intraepithelial Neoplasia - Grade 3 Squamous Intraepithelial Neoplasia - Grade III SIN - Grade III Squamous Intraepithelial Neoplasia - Grade III Squamous Intraepithelial Neoplasia - Intraepithelial Squamous Cell Carcinoma - Intraepithelial Squamous Cell Carcinoma - Intraepithelial squamous cell carcinoma - SCC in situ - Squamous Carcinoma In situ - Squamous Carcinoma in situ - Squamous Cell Carcinoma In situ - Squamous Cell Carcinoma in situ - Squamous Cell Carcinoma in-situ - Squamous cell carcinoma in situ, NOS - Squamous intraepithelial neoplasia, grade III