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A 48-year-old man who has metastatic colon cancer was treated with intravenous fluorouracil, leucovorin, oxaliplatin, and cetuximab, which is a monoclonal antibody to the epidermal growth factor receptor (EGFR). He had a major objective response of 11 months' duration and remains alive as of 14 months after treatment. An acneiform eruption consisting of sterile papules and pustules with an adherent yellow crust developed on his face, chest, and back (Panel A). This rash is a characteristic effect of therapy with EGFR inhibitors and is associated with an improved outcome. After gentle débridement of the crust, the right half of his . . . [Full Text of this Article] |