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Abstract Background: Acanthosis nigricans (AN) develops sporadically or in association with obesity, insulin-resistance and dark pigmentary phenotype. Unusual clinical presentations of AN may be diagnostically vexing. Objectives: The aim of the report is to present unusual clinical and dermoscopic pictures of hyperkeratotic, brownish lesions of the nipples resembling acanthosis nigricans. Patients/Methods: Data including clinical and […]