“…Warts, squamous cell carcinoma, and seborrheic keratosis comprise most of the remainder (9, 10). Other lesions have been uncommonly seen at the base, including basal cell carcinoma, epidermal inclusion cysts, trichilemmoma, keratoacanthoma, Bowen's disease, angiokeratoma, granular cell tumor, Kaposi's sarcoma, Paget's disease, sebaceous adenoma, perforating pilomatricoma, sebaceous carcinoma, pyogenic granuloma, keratosis palmoplantaris, dermatofibroma, and chronic discoid lupus erythematosus (11–17). In general, the base of the lesion is required for histopathological diagnosis of the underlying etiology, and thus an excisional biopsy is preferable.…”