Seborrheic keratoses (SK) are very common benign tumor arising in epidermis. Few malignant transformation of SK were reported. Inflammation, ulceration or atypical nature is the evidence of malignant transformation. Some melanoma can mimic SK. So, all SK need confirm histopathologic diagnosis. We reported a case of recurrent seborrheic keratosis with satellite lesions on the left groin in a linear pattern in a 46-year-old man.
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