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1Department of Dermatology and Research Institute of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. miumiu@amc.seoul.kr
Neuroendocrine carcinoma is known to have features of neuroendocrine and epithelial differentiation through immunohistochemical and biochemical investigation. Cutaneous metastatic neuroendocrine carcinoma must be differentiated from Merkel cell carcinoma, a primary cutaneous neuroendocrine carcinoma and metastatic carcinoma from other visceral disease. Cutaneous metastases from neuroendocrine carcinomas of a variety of sites including the uterus, vulva, gall bladder and fallopian tubes have been reported. We report a 58-year-old Korean man with a metastatic skin tumor on his scalp from rectal neuroendocrine carcinoma.