The mediastinoscope is advanced and used to perform the dissection of the pretracheal fascia to the carina which exposes all four paratracheal nodal stations level 2R, 2L, 4R and 4L and the subcarinal level 7.
Se logra exponer todas las 4 estaciones nodales paratraqueales nivel 2R, 2L, 4R, y 4L y la subcarinal nivel 7.