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Vincent Jules Louis Queyrat (2 December 1856 in Chavanat, Creuse, France – 18 October 1933 in Paris, France) was a French dermatologist and syphilologist who is best remembered for the erythroplasia of Queyrat, a carcinoma in situ of the skin of the penis. From 1898 until 1923, Queyrat was head of the dermatology service of l'Hôpital Ricord, a venereal hospital in Paris, now Hôpital Cochin.
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