Experimental Organism Benign Keratoacanthoma

**Semantic type:** Neoplastic Process

**Definition:** A benign neoplasm in the superficial dermis with direct association to the epidermis, composed of well differentiated squamous epithelium and a central cavity filled with concentric layers of keratin; a pore (opening in the epidermis) may be present. (CDISC)

**Synonyms:** - KERATOACANTHOMA, BENIGN