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| Squamous-cell carcinoma of the heel of the foot. This is a subtype called verrucous carcinoma. Radiation is not the treatment of choice for this type of squamous-cell cancer and can in fact cause the verrucous carcinoma to spread internally. | A cutaneous horn, compact volcano like scaly, growth of the arm. Cutaneous horns may look like many different types of growths both benign and malignant. In this case, the cutaneous horn was due to a precancer as confirmed under the microscope. |