Fig. 2From: Malignant acanthosis nigricans: an early diagnostic clue for gastric adenocarcinomaHistopathologic examinations of the skin lesion. A biopsy of the skin lesion revealed epidermal hyperkeratosis, papillomatosis, and hyperpigmentation of the basal layer. In addition, some dermal papillae were projected upward in the form of finger-like projections (a HE × 40; b HE × 100)Back to article page