Basal cell carcinoma within a seborrhoeic keratosis.
D000368:Aged; D002280:Basal Cell Carcinoma / Q000209:etiology*; D012628:Dermatitis, Seborrheic / Q000150:complications*; D005260:Female; D006801:Humans; D007642:Keratosis; D012878:Skin Neoplasms / Q000209:etiology*