Basal Cell Carcinoma

**Definition:** A malignant skin neoplasm that seldom metastasizes but has potentialities for local invasion and destruction. Clinically it is divided into types: nodular, cicatricial, morphaic, and erythematoid (pagetoid). They develop on hair-bearing skin, most commonly on sun-exposed areas. Approximately 85% are found on the head and neck area and the remaining 15% on the trunk and limbs. (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1471)

**Tree numbers:** - C04.557.470.200.649.002 - C04.557.470.565.165 - C04.588.805.511.002 - C17.800.882.623.002

**Synonyms:** - Basal Cell Epithelioma - Rodent Ulcer - Carcinoma, Basal Cell