Tienne Jacques Marie Raymond Cstan

French neurologist who conducted research on the development of cerebrospinal fluid and the effects of intra-ventricular injection. His name is lent to "Céstan-Chenais syndrome" (named with Louis Jean Chenais): A brainstem syndrome that is a clinical amalgamation of Wallenberg’s or Avellis' syndrome and Babinski-Nageotte syndrome; "Céstan-LeJonne syndrome": synonymous with Emery–Dreifuss muscular dystrophy; and "Raymond-Céstan syndrome" (named with Fulgence Raymond): Tumour of the cerebral peduncles that involves the red nucleus and causes speech disorders, palsy of lateral conjugate gaze, etc. From 1892 he studied medicine in Paris, and was subsequently a hospital interne and a student of Édouard Brissaud at the Salpêtrière. In 1899 he received his medical doctorate, and was chosen by Fulgence Raymond to be chef de clinique at the Salpêtrière. In 1903 he was put in charge of the histopathology laboratory, and during the following year, he obtained his agrégation. Soon afterwards, he moved to Toulouse, where in 1913 he attained the chair of psychiatry. He died in 1934. Link to Wikipedia biography