PMC5771772_01
Numerous scattered erythematous scaly papules and plaques, as well as hypopigmented patches, on the torso of patient with arsenical keratosis.
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fig1
A man in his 80s had a 45-year history of numerous erythematous scaly papules and plaques on his trunk and extremities (Fig 1, Fig 2, Fig 3).
Numerous scattered erythematous scaly papules and plaques on back of patient with arsenical keratosis.
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fig2
A man in his 80s had a 45-year history of numerous erythematous scaly papules and plaques on his trunk and extremities (Fig 1, Fig 2, Fig 3).
Thick hyperkeratotic papule on volar aspect of second digit of patient with arsenical keratosis.
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fig3
A man in his 80s had a 45-year history of numerous erythematous scaly papules and plaques on his trunk and extremities (Fig 1, Fig 2, Fig 3).
PMC5771772_02
Hematoxylin-eosin stain consistent with invasive squamous cell carcinoma.
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These findings were consistent with the diagnosis of invasive SCC (Fig 4).
PMC5771772_03