[Recent modifications of Rethi's operation (author's transl)]

Rethi's operation for laryngotracheal stenosis is discussed, together with P. Aboulker's modifications (hollow teflon intralaryngeal tube surrounding a fenestrated tracheal canula, which can be moved rapidly). The tube has been modified and its length can be more easily adjusted. Its extremities are rounded and polished (less risk of trauma), and it has an upper diaphragm which has a temporary action but is very useful for avoiding wrong directions in the first days of use.