Corral traveled with his family to Paris for medical care, where he was diagnosed with cancer. After his operation, the cancer was found to be incurable. In light of his own deteriorating health and the increasing revolutionary opposition to the Díaz government, Corral submitted his resignation, dated May 10, 1911, to Francisco León de la Barra, Díaz’s foreign secretary, which de la Barra held until Díaz submitted his own "Renuncia" on May 25, 1911.