In 1937 Ravel began to suffer pain from his condition, and was examined by Clovis Vincent, a well-known Paris neurosurgeon. Vincent advised surgical treatment. He thought a tumour unlikely, and expected to find ventricular dilatation that surgery might prevent from progressing. Ravel's brother Edouard accepted this advice; as Henson comments, the patient was in no state to express a considered view. After the operation there seemed to be an improvement in his condition, but it was short-lived, and he soon lapsed into a coma. He died on 28 December, at the age of 62.