Basal Cell Carcinoma (Rodent Ulcer) By Gregory L Wells, MD, Ada West Dermatology and Dermatopathology Reviewed / Revised Sep 2022 View Patient Education Symptoms and Signs Diagnosis Prognosis Treatment Prevention Key Points Topic Resources Basal Cell Carcinoma Nodular Basal Cell Carcinoma Morpheaform Basal Cell Carcinoma Pigmented Basal Cell Carcinoma Basal cell carcinoma is a superficial, slowly growing papule or nodule that derives from certain epidermal cells.