This 57 year old female developed a crusted, erythematous, vesicular-appearing lesion on the dorsum of one hand.
 

	Scanning power view showing a scale/crust over the right side of the specimen. There is an incipient subepidermal  vesicle or bulla. Superficial and deep perivascular lymphocytic infiltrates are present.
	Low power view of the superficial part of the specimen.
	High power view showing lymphocytes, polymorphonuclear leukocytes, very few eosinophilic leukocytes, and a few macrophages.
	High power view of a section stained with the periodic acid-Schiff stain.

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