To the Editor: Seborrheic keratosis (SK) is one of the most common benign skin tumors in clinic. Due to the wide variation in its clinical features, however, and particularly when both its manifestations and dermoscopic findings of its lesion are atypical, it may be challenging to differentiate SK lesions from other benign or malignant skin tumors.[1,2] We here report a case of SK of an adenoid type that initially imitated pigmented basal cell carcinoma (BCC) upon dermoscopy.
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