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A 37-year-old man was evaluated because of a two-year history of asymptomatic thickening and darkening of the skin on his axillae (Panel A), neck, face, and arms. The patient had no history of diabetes mellitus or other endocrine disorders, alcohol abuse, or chronic hepatitis. On examination of the skin, brown patches and plaques with elevated ridges and a velvety feel were observed on the axillary regions, the neck, the antecubital fossae, the dorsal aspect of the hands, and the malar and periorbital regions. Cutaneous findings were consistent with the diagnosis of acanthosis nigricans. An evaluation for cancer revealed a hepatic . . . [Full Text of this Article] |
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