[Surgery for cancer with mediastinal lymph node invasiveness (N2)].

Resection is indicated in about 20% of N2 cases. When it is complete a 5-year survival rate may be expected. It represents for these patients a chance of cure and therefore must be considered in all cases of N2, either immediately or after an adjuvant treatment. Its results can be improved by strict selection of the patients and by an efficient chemotherapy.