A 56-year-old woman with a recent diagnosis of esophageal cancer has developed a rash. Let’s diagnose.

A 56-year-old woman, with recent diagnosis of esophageal cancer, visited her doctor for a rash that developed on her hands, ears, and nose over the last couple of months. On examination, hyperkeratotic plaques were seen on the palm and fingers, and scaly papules were seen on her helices and nose. Her nails displayed subungual hyperkeratosis, onychodystrophy, and onycholysis along with erythema and edema on her nail folds.

What’s the diagnosis?

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