Skin Infiltrating Basal Cell Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A variant of basal cell carcinoma presenting as a pale, indurated plaque, usually in the upper trunk or face. Morphologically, it is characterized by the presence of strands, cords, and columns of basaloid cells infiltrating the dermis. Perineural invasion may be present and the basaloid cell infiltrate may extend into deeper tissues.

**Synonyms:** - Infiltrating Basal Cell Carcinoma - Infiltrating basal cell carcinoma, NOS