F2Ch21: To the left, the pattern is that of a variant of seborrheic keratosis. To the right, the well differentiated basal cell carcinoma is represented. On all sections, the carcinoma is within the confines of the domain of the seborrheic keratosis; the patterns are such that the basal cell carcinoma is interpreted as having its origin from the “seborrheic keratosis.”
|