Photo Challenge

Brown-Black Papulonodules on the Arm

A 63-year-old man presented with a pruritic rash on the right arm of approximately 3 months' duration. On physical examination, several discrete,...

Cosmetic Dermatology

Regenerative Medicine in Cosmetic Dermatology

Stem cell therapies are at the forefront of regenerative aesthetic medicine. Multipotent stem cells and induced pluripotent stem cells (iPSCs),...

Photo Challenge

Recalcitrant Ulcer on the Lower Leg

An 80-year-old woman with a medical history notable for obesity (body mass index, 31.2), type 2 diabetes mellitus, hypertension, and chronic...

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