Charles Émile Troisier

Charles Émile Troisier was a French surgeon born on 6 April 1844 at Sévigny-Waleppe in the Ardennes, the son of a local health officer. He took his doctorate in medicine in Paris in 1874, went on to a professorship at the Faculty of Medicine of the University of Paris, and became a member of the Académie Nationale de Médecine; he was made a knight of the Legion of Honour in 1890. He died on 11 December 1919. His name survives in two medical eponyms: Troisier's sign, a hard, enlarged lymph node above the left collarbone that can point to a cancer elsewhere in the abdomen, and the Troisier-Hanot-Chauffard syndrome, an older name for a form of diabetes mellitus. His son Jean Troisier became a physician and biologist at the Pasteur Institute, and his granddaughter Solange Troisier was a doctor and a leading feminist.