Flynn K J, Wiemer D R
J Dermatol Surg Oncol. 1978 Oct;4(10):773-5. doi: 10.1111/j.1524-4725.1978.tb00547.x.
Differentiation between benign and malignant lesions on the plantar surfaces is sometimes clinically impossible and requires biopsy. A case of epithelioma cuniculatum plantare is reported that was futilely treated for years as a plantar wart and then upon proper diagnosis was successfully treated by complete excision and rotation of a flap of plantar skin.